The weight of a body acts through the centre of – (1) gravity (2) mass (3) both (1) and (2) (4) buoyancy

The weight of a body acts through the centre of – (1) gravity (2) mass (3) both (1) and (2) (4) buoyancy
by

1 Answer

Answer :

(1) gravity Explanation: The centre of gravity of a collection of masses is the point where all the weight of the object can be considered to be concentrated. The entire weight acts through the center of gravity instead of acting through the individual masses. In a uniform gravitational field (like the field close to the surface of the Earth) the Centres of Gravity and Mass are in exactly the same place.
by
selected

Related questions

The weight of a body acts through the centre of (1) gravity (2) mass (3) both (1) and (2) (4) buoyancy

Description : The weight of a body acts through the centre of (1) gravity (2) mass (3) both (1) and (2) (4) buoyancy

Last Answer : gravity

Resultant pressure of the liquid in the case of an immersed body acts through (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Description : Resultant pressure of the liquid in the case of an immersed body acts through (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Last Answer : Answer: Option B

07. The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced. A) True B) False

Description : 07. The line of action of the force of buoyancy acts through the centre of gravity of the volume of the liquid displaced. A) True B) False

Last Answer : A

Choose the wrong statement (A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force (B) Buoyant force is equal to the weight of the liquid displaced (C) The point through which buoyant force acts, is called the center of buoyancy (D) Center of buoyancy is located above the center of gravity of the displaced liquid

Description : Choose the wrong statement (A) Any weight, floating or immersed in a liquid, is acted upon by a buoyant force (B) Buoyant force is equal to the weight of the liquid displaced (C) The ... the center of buoyancy (D) Center of buoyancy is located above the center of gravity of the displaced liquid

Last Answer : Answer: Option D

The centre of percussions is a.The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis b.The point of application of the resultant of gravity and buoyancy forces of the body c.The same as centre of gravity d.The metacentre of the body e.The point in a body about which it can rotate horizontally and oscillates under the influence of gravity

Description : The centre of percussions is a.The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis b.The point of application of the resultant ... .The point in a body about which it can rotate horizontally and oscillates under the influence of gravity

Last Answer : a. The point of application of the resultant of all the forces tending to cause a body to rotate about a central axis

A floating/submerged body is always stable, if its centre of gravity (A) Lies above its centre of buoyancy (B) And centre of buoyancy coincide (C) Lies below its centre of buoyancy (D) Lies above its metacentre

Description : A floating/submerged body is always stable, if its centre of gravity (A) Lies above its centre of buoyancy (B) And centre of buoyancy coincide (C) Lies below its centre of buoyancy (D) Lies above its metacentre

Last Answer : (C) Lies below its centre of buoyancy

The meatcentric height is the distance between the (A) Centre of gravity of the floating body and the centre of buoyancy (B) Centre of gravity of the floating body and the metacentre (C) Metacentre and centre of buoyancy (D) Original centre of buoyancy and new centre of buoyancy

Description : The meatcentric height is the distance between the (A) Centre of gravity of the floating body and the centre of buoyancy (B) Centre of gravity of the floating body and the metacentre (C) Metacentre and centre of buoyancy (D) Original centre of buoyancy and new centre of buoyancy

Last Answer : Answer: Option B

A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy. (A) Coincides with (B) Lies below (C) Lies above (D) None of these

Description : A submerged body is said to be in a stable equilibrium, if its centre of gravity __________ the centre of buoyancy. (A) Coincides with (B) Lies below (C) Lies above (D) None of these

Last Answer : Answer: Option B

A body floating in a liquid is said to be in neutral equilibrium, if its metacentre (A) Coincides with its centre of gravity (B) Lies above its centre of gravityC) Lies below its centre of gravity (D) Lies between the centre of buoyancy and centre of gravity

Description : A body floating in a liquid is said to be in neutral equilibrium, if its metacentre (A) Coincides with its centre of gravity (B) Lies above its centre of gravity C) Lies below its centre of gravity (D) Lies between the centre of buoyancy and centre of gravity

Last Answer : Answer: Option A

When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as (A) Centre of pressure (B) Centre of gravity (C) Centre of buoyancy (D) Metacentre

Description : When a body, floating in a liquid, is given a small angular displacement, it starts oscillating about a point known as (A) Centre of pressure (B) Centre of gravity (C) Centre of buoyancy (D) Metacentre

Last Answer : Answer: Option D

The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Description : The centre of gravity of the volume of the liquid displaced by an immersed body is called (A) Centre of gravity (B) Centre of pressure (C) Metacentre (D) Centre of buoyancy

Last Answer : Answer: Option D

A hydrometer indicates specific gravity by comparing the _____________. A. density of a substance in water with the density of the same substance in air B. differences in weight between water and the liquid measured C. mass of substance measured with the density of the same substance D. buoyancy of an object in water with the buoyancy of the same object in the liquid being measured

Description : A hydrometer indicates specific gravity by comparing the _____________. A. density of a substance in water with the density of the same substance in air B. differences in weight between water and the ... of an object in water with the buoyancy of the same object in the liquid being measured

Last Answer : Answer: D

The distance between metacentre and __________ is called metacentric height. (A) Water surface (B) Centre of gravity(C) Centre of buoyancy(D) None of these

Description : The distance between metacentre and __________ is called metacentric height. (A) Water surface (B) Centre of gravity (C) Centre of buoyancy (D) None of these

Last Answer : (B) Centre of gravity

The line of action of the buoyant force acts through the (A) Centroid of the displaced volume of fluid (B) Centre of gravity of a submerged body (C) Centroid of the volume of any floating body (D) None of these

Description : The line of action of the buoyant force acts through the (A) Centroid of the displaced volume of fluid (B) Centre of gravity of a submerged body (C) Centroid of the volume of any floating body (D) None of these

Last Answer : (A) Centroid of the displaced volume of fluid

The line of action of the buoyant force acts through the (A) Centroid of the volume of fluid vertically above the body (B) Centre of the volume of floating body (C) Center of gravity of any submerged body (D) Centroid of the displaced volume of fluid

Description : The line of action of the buoyant force acts through the (A) Centroid of the volume of fluid vertically above the body (B) Centre of the volume of floating body (C) Center of gravity of any submerged body (D) Centroid of the displaced volume of fluid

Last Answer : Answer: Option D

Point where all weight of object acts is called A. central point B. center of gravity C. edge D. center of mass

Description : Point where all weight of object acts is called A. central point B. center of gravity C. edge D. center of mass

Last Answer : center of gravity

The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as (A) Meta center (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Description : The point in the immersed body through which the resultant pressure of the liquid may be taken to act is known as (A) Meta center (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Last Answer : Answer: Option B

The point where total mass of a body is supposed to be concentrated is known as – (1) Dead centre (2) Centre of mass (3) Centre of gravity (4) Centre of motion

Description : The point where total mass of a body is supposed to be concentrated is known as – (1) Dead centre (2) Centre of mass (3) Centre of gravity (4) Centre of motion

Last Answer : (2) Centre of mass Explanation: The centre of mass of a body or a system of particles is defined as a single point at which the whole mass of the body or system is imagined to be concentrated and ... applied forces acts at that point. It is that point that moves when forces are applied on the body.

The point where total mass of a body is supposed to be concentrated is known as (1) Dead centre (2) Centre of mass (3) Centre of gravity (4) Centre of motion

Description : The point where total mass of a body is supposed to be concentrated is known as (1) Dead centre (2) Centre of mass (3) Centre of gravity (4) Centre of motion

Last Answer : Centre of mass

It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because – (1) weights of buckets are balanced (2) centre of gravity falls within the body (3) centre of gravity and centre of equilibrium fall within the feet (4) resultant weight of buckets is zero

Description : It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because – (1) weights of buckets are balanced (2) centre of gravity falls within the body (3) centre of gravity and centre of equilibrium fall within the feet (4) resultant weight of buckets is zero

Last Answer : (3) centre of gravity and centre of equilibrium fall within the feet Explanation: When the buckets containing equal amount of water are held in both hands, weight is spaced out more evenly than it ... centre of gravity and the centre of equilibrium should fall, in the present case, within the feet.

It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because (1) weights of buckets are balanced (2) centre of gravity falls within the body (3) centre of gravity and centre of equilibrium fall within the feet (4) resultant weight of buckets is zero

Description : It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because (1) weights of buckets are balanced (2) centre of gravity falls within the body (3) centre of gravity and centre of equilibrium fall within the feet (4) resultant weight of buckets is zero

Last Answer :  centre of gravity and centre of equilibrium fall within the feet

For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively). (A) G is above B (B) B is above G (C) B & G coincide (D) None of these

Description : For a stable equilibrium of a submerged body (where, G and B are centres of gravity & buoyancy respectively). (A) G is above B (B) B is above G (C) B & G coincide (D) None of these

Last Answer : (B) B is above G

The conditions for the stable equilibrium of a floating body are (A) The metacentre should lie above the center of gravity (B) The center of buoyancy and the center of gravity must lie on the same vertical line (C) A righting couple should be formed (D) All the above are correct

Description : The conditions for the stable equilibrium of a floating body are (A) The metacentre should lie above the center of gravity (B) The center of buoyancy and the center of gravity must lie on the same vertical line (C) A righting couple should be formed (D) All the above are correct

Last Answer : Answer: Option D

For a floating body to be in stable equilibrium, its metacentre should be (A) Below the center of gravity (B) Below the center of buoyancy (C) Above the center of buoyancy (D) Above the center of gravity

Description : For a floating body to be in stable equilibrium, its metacentre should be (A) Below the center of gravity (B) Below the center of buoyancy (C) Above the center of buoyancy (D) Above the center of gravity

Last Answer : Answer: Option D

The center of gravity of the volume of the liquid displaced by an immersed body is called (A) Metacentre (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Description : The center of gravity of the volume of the liquid displaced by an immersed body is called (A) Metacentre (B) Center of pressure (C) Center of buoyancy (D) Center of gravity

Last Answer : Answer: Option C

Choose the wrong statement (A) The center of buoyancy is located at the center of gravity of the displaced liquid (B) For stability of a submerged body, the center of gravity of body must lie directly below the center of buoyancy (C) If C.G. and center of buoyancy coincide, the submerged body must lie at neutral equilibrium for all positions (D) All floating bodies are stable

Description : Choose the wrong statement (A) The center of buoyancy is located at the center of gravity of the displaced liquid (B) For stability of a submerged body, the center of gravity of body must ... the submerged body must lie at neutral equilibrium for all positions (D) All floating bodies are stable

Last Answer : Answer: Option D

Metacentric height is given as the distance between (A) The center of gravity of the body and the metacentre (B) The center of gravity of the body and the center of buoyancy (C) The center of gravity of the body and the center of pressure (D) Center of buoyancy and metacentre

Description : Metacentric height is given as the distance between (A) The center of gravity of the body and the metacentre (B) The center of gravity of the body and the center of buoyancy (C) The center of gravity of the body and the center of pressure (D) Center of buoyancy and metacentre

Last Answer : Answer: Option A

The two important forces for a floating body are (A) Buoyancy, gravity(B) Buoyancy, pressure (C) Buoyancy, inertial (D) Inertial, gravity

Description : The two important forces for a floating body are (A) Buoyancy, gravity (B) Buoyancy, pressure (C) Buoyancy, inertial (D) Inertial, gravity

Last Answer : Answer: Option A

13. The centre of buoyancy is the centre of area of the immersed body. A) Correct B) Incorrec

Description : 13. The centre of buoyancy is the centre of area of the immersed body. A) Correct B) Incorrec

Last Answer : A

For a floating body to be in equilibrium (A) Meta centre should be above e.g.(B) Centre of buoyancy and e.g. must lie on same vertical plane (C) A righting couple should be formed (D) All of the above

Description : For a floating body to be in equilibrium (A) Meta centre should be above e.g . (B) Centre of buoyancy and e.g. must lie on same vertical plane (C) A righting couple should be formed (D) All of the above

Last Answer : Answer: Option D

Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric liquid should have high surface tension (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Description : Pick out the wrong statement: (A) The vacuum pressure is always the negative gauge pressure (B) The pressure of the liquid measured by a piezometer tube is the gauge pressure (C) Manometric ... point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

Last Answer : (D) The point at which the resultant pressure on an immersed surface acts, is known as the centre of gravity

The point at which the resultant pressure on an immersed surface acts, is known as (A) Centre of gravity (B) Centre of depth (C) Centre of pressure (D) Centre of immersed surface

Description : The point at which the resultant pressure on an immersed surface acts, is known as (A) Centre of gravity (B) Centre of depth (C) Centre of pressure (D) Centre of immersed surface

Last Answer : Answer: Option C

The centre of pressure acts __________ the centre of gravity of immersed surface. (A) At (B) Above (C) Below (D) None of these

Description : The centre of pressure acts __________ the centre of gravity of immersed surface. (A) At (B) Above (C) Below (D) None of these

Last Answer : Answer: Option C

Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of (A) Powder & granular solids (B) Liquids (C) Low melting point semi-solids (D) All 'a', 'b' & 'c

Description : Hydrometer measures the specific gravity of liquids based on the principles of buoyancy. Pycnometer is used to measure the specific gravity of (A) Powder & granular solids (B) Liquids (C) Low melting point semi-solids (D) All 'a', 'b' & 'c

Last Answer : (D) All 'a', 'b' & 'c

Metacentric height is the distance between the metacentre and (A) Water surface(B) Center of pressure (C) Center of gravity (D) Center of buoyancy

Description : Metacentric height is the distance between the metacentre and (A) Water surface (B) Center of pressure (C) Center of gravity (D) Center of buoyancy

Last Answer : Answer: Option C

Euler's dimensionless number relates the following (A) Inertial force and gravity (B) Viscous force and inertial force (C) Viscous force and buoyancy force (D) Pressure force and inertial force

Description : Euler's dimensionless number relates the following (A) Inertial force and gravity (B) Viscous force and inertial force (C) Viscous force and buoyancy force (D) Pressure force and inertial force

Last Answer : Answer: Option D

Which formula is used to calculate mass moment of inertia (I G ) of a circular rim about the axis through centre of gravity? a. mr 2 /2b. mr 2 /12 c. mr 2 /4 d. mr 2

Description : Which formula is used to calculate mass moment of inertia (I G ) of a circular rim about the axis through centre of gravity? a. mr 2 /2b. mr 2 /12 c. mr 2 /4 d. mr 2

Last Answer : d. mr 2

The rotational effect of a force on a body about an axis of rotation is described in terms of the (1) Centre of gravity (2) Centripetal force (3) Centrifugal force (4) Moment of force

Description : The rotational effect of a force on a body about an axis of rotation is described in terms of the (1) Centre of gravity (2) Centripetal force (3) Centrifugal force (4) Moment of force

Last Answer : (4) Moment of force Explanation: The rotational effect of a force on a body about an axis of rotation is described in terms of the Moment of force.

The rotational effect of a force on a body about an axis of rotation is described in terms of the (1) Centre of gravity (2) Centripetal force (3) Centrifugal force (4) Moment of force

Description : The rotational effect of a force on a body about an axis of rotation is described in terms of the (1) Centre of gravity (2) Centripetal force (3) Centrifugal force (4) Moment of force

Last Answer : (4) Moment of force Explanation: The rotational effect of a force on a body about an axis of rotation is described in terms of the Moment of force.

The centre of gravity of a sprinter during the race lies – (1) Ahead of his feet (2) Behind his feet (3) At the centre of the body (4) To the left side of the body

Description : The centre of gravity of a sprinter during the race lies – (1) Ahead of his feet (2) Behind his feet (3) At the centre of the body (4) To the left side of the body

Last Answer : (1) Ahead of his feet Explanation: Running is a means of terrestrial locomotion allowing humans and other animals to move rapidly on foot. It is simply defined in athletics terms as a gait in ... are kept mostly straight and the center of gravity vaults over the legs in an inverted pendulum fashion.

The centre of gravity of a sprinter during the race lies (1) ahead of his feet (2) behind his feet (3) at the centre of the body (4) to the left side of the body

Description : The centre of gravity of a sprinter during the race lies (1) ahead of his feet (2) behind his feet (3) at the centre of the body (4) to the left side of the body

Last Answer : ahead of his feet

It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because – (1) weights of buckets are balanced (2) centre of gravity falls within the body (3) centre of gravity and centre of equilibrium fall within the feet (4) resultant weight of buckets is zero

Description : It is easier to carry two buckets of water in one hand each, than to carry only one in one hand because – (1) weights of buckets are balanced (2) centre of gravity falls within the body (3) centre of gravity and centre of equilibrium fall within the feet (4) resultant weight of buckets is zero

Last Answer : (3) centre of gravity and centre of equilibrium fall within the feet Explanation: When the buckets containing equal amount of water are held in both hands, weight is spaced out more evenly than it ... centre of gravity and the centre of equilibrium should fall, in the present case, within the feet.

A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to------? A. Prop him up if he falls B. Spread out his weight and reduce the pressure on the rope C. Add extra weight to keep the rope tightly stretched D. To keep the centre of gravity always vertically above the rope (Answer)

Description : A tight-rope walker carries a long pole which he holds across his body. The purpose of this pole is to------? A. Prop him up if he falls B. Spread out his weight and reduce the ... to keep the rope tightly stretched D. To keep the centre of gravity always vertically above the rope (Answer)

Last Answer : D. To keep the centre of gravity always vertically above the rope (Answer)

The force of buoyancy is always __________ the weight of the liquid displaced by the body. (A) Equal to (B) Less than (C) More than (D) None of these

Description : The force of buoyancy is always __________ the weight of the liquid displaced by the body. (A) Equal to (B) Less than (C) More than (D) None of these

Last Answer : Answer: Option A

The body will float if the force of buoyancy is __________ the weight of the liquid displaced. (A) Equal to (B) Less than (C) More than (D) None of these

Description : The body will float if the force of buoyancy is __________ the weight of the liquid displaced. (A) Equal to (B) Less than (C) More than (D) None of these

Last Answer : Answer: Option C

The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced. (A) Equal to (B) Less than (C) More than (D) None of these

Description : The body will sink down if the force of buoyancy is __________ the weight of the liquid displaced. (A) Equal to (B) Less than (C) More than (D) None of these

Last Answer : Answer: Option B

The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to (A) Buoyancy (B) Equilibrium of a floating body (C) Archimedes' principle (D) Bernoulli's theorem

Description : The resultant upward pressure of a fluid on a floating body is equal to the weight of the fluid displaced by the body. This definition is according to (A) Buoyancy (B) Equilibrium of a floating body (C) Archimedes' principle (D) Bernoulli's theorem

Last Answer : Answer: Option C

According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to (A) The weight of the body (B) More than the weight of the body (C) Less than the weight of the body (D) Weight of the fluid displaced by the body

Description : According to the principle of buoyancy a body totally or partially immersed in a fluid will be lifted up by a force equal to (A) The weight of the body (B) More than the weight of the body (C) Less than the weight of the body (D) Weight of the fluid displaced by the body

Last Answer : Answer: Option D

A man carrying a load on his back bends forward because of one of the following reasons: (a) To adjust the centre of gravity of the system such that the vertical line through the centre of gravity passes within the base (b) The man feels lighter because of greater reaction (c) To prevent the load from slipping over and falling down (d) To keep the centre of gravity of the system outside the body

Description : A man carrying a load on his back bends forward because of one of the following reasons: (a) To adjust the centre of gravity of the system such that the vertical line through the centre of gravity ... slipping over and falling down (d) To keep the centre of gravity of the system outside the body

Last Answer : Ans:(a)

The line of action of the buoyant force passes through the centre of gravity of the (A) Submerged body (B) Displaced volume of the fluid (C) Volume of fluid vertically above the body (D) Horizontal projection of the body

Description : The line of action of the buoyant force passes through the centre of gravity of the (A) Submerged body (B) Displaced volume of the fluid (C) Volume of fluid vertically above the body (D) Horizontal projection of the body

Last Answer : (B) Displaced volume of the fluid