A body of mass 37 kg rests on a rough horizontal surface. The minimum horizontal force required to just start the motion

A body of mass 37 kg rests on a rough horizontal surface. The minimum horizontal force required to just start the motion
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A body of mass 37 kg rests on a rough horizontal surface. The minimum horizontal force required to just start the ... ) µs = 0.188 b) µk = 0.118
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A block of mass 37 kg rests on a rough horizontal plane having coefficient of static friction 0.3.

Description : A block of mass 37 kg rests on a rough horizontal plane having coefficient of static friction 0.3.

Last Answer : A block of mass 37 kg rests on a rough horizontal plane having coefficient of static friction ... force required to just move the block horizontally.

A weight of 4.9 N rests on a rough horizontal floor that has a coefficient of friction of 0.5. If g = 9.8 m/s2, the smallest horizontal force that gives the weight an acceleration of 4m/s2 is most nearly a.2.5 N b.3 N c.2 N d.4.5 N e.4.9 N

Description : A weight of 4.9 N rests on a rough horizontal floor that has a coefficient of friction of 0.5. If g = 9.8 m/s2, the smallest horizontal force that gives the weight an acceleration of 4m/s2 is most nearly a.2.5 N b.3 N c.2 N d.4.5 N e.4.9 N

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A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is: w) 0 meters per second x) 0.5 meters per second y) 5 meters per second z) 50 meters per second

Description : A 10 kilogram mass rests on a horizontal frictionless surface. A horizontal force of 5 Newtons is applied to the mass. After the force has been applied for 1 second, the velocity of the mass is: w) 0 meters per second x) 0.5 meters per second y) 5 meters per second z) 50 meters per second

Last Answer : ANSWER: X -- 0.5 METERS PER SECOND

The rough surface of a horizontal table offers a definite maximum opposing force to initiate the motion of a block along with the table,

Description : The rough surface of a horizontal table offers a definite maximum opposing force to initiate the motion of a block along with the table,

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A body of weight 100 kg is placed on a horizontal plane. A horizontal force of 30 kg is applied and the block is just on the point of motion. The angle of friction is a.About 16? b.30? c.45? d.60? e.None of the above

Description : A body of weight 100 kg is placed on a horizontal plane. A horizontal force of 30 kg is applied and the block is just on the point of motion. The angle of friction is a.About 16? b.30? c.45? d.60? e.None of the above

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Why do you polish the teeth before seating of a partial denture: A. To smooth the rough surface B. To minimise the retention of plaque C. To increase the adoptability of occlusal rests

Description : Why do you polish the teeth before seating of a partial denture: A. To smooth the rough surface B. To minimise the retention of plaque C. To increase the adoptability of occlusal rests

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A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a.Proportional to the coefficient of static friction b.Proportional to the coefficient of dynamic friction c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

Description : A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... c.Indeterminate d.Determinate but depends on the acceleration of the cylinder e.None of the above

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A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a.Indeterminate b.Proportional to the coefficient of dynamic friction c.Determinate but depends on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

Description : A uniform cylinder of weight W is rolling while slipping on a rough horizontal surface under the influence of a horizontal force. The force of friction between the cylinder and the surface is a. ... on the acceleration of the cylinder d.107 dynes e.Proportional to the coefficient of static friction

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Figure below shows a block of mass 35 kg resting on a table. The table is so rough that it offers a self adjusting resistive force 10%

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In a tug of war, five men pull a rope to the left at A and six moen pull the rope at B. A weight of 5 kg is hung vertically from the centre of the rope. In order that the rope AB be horizontal a.the force applied on A must be equal to that on B b.at least one man on side B should be removed c.infinite force will be required to be applied at both ends d.the force required on A must not be equal to that on B e.107 dynes

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Last Answer : c. infinite force will be required to be applied at both ends

Angle of friction is the (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The ratio of minimum friction force to the friction force acting when the body is just about to move (D) The ratio of minimum friction force to friction force acting when the body is in motion

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Last Answer : (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction

In the equation of virtual work, following force is neglected (A) Reaction of any smooth surface with which the body is in contact (B) Reaction of a rough surface of a body which rolls on it without slipping (C) Reaction at a point or an axis, fixed in space, around which a body is constrained to turn (D) All of the above

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The moving parts of a machine which weigh 1 tonne perform vertical simple harmonic motion with an amplitude of 2.5 cm and a period of 0.5 sec. The base of the machine weighs 3 tonnes and rests on the ground. Maximum reactions on the ground would be a.3.6 tonnes b.2.4 tonnes c.4.0 tonnes d.4.8 tonnes e.4.4 tonnes

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Last Answer : e. 4.4 tonnes

A pilot can improve the probability of detecting other aircrafts by: a. Minimizing the duration of eye rests and making as many eye movements as possible b. Moving the head frequently to alter the apparent motion of any distant object c. Maximizing the time spent looking in each sector to allow the maximum chance of detecting movement d. Maintaining as far as possible a lookout ahead of the aircraft and relying on peripheral vision to detect any movement from the side

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A pilot can improve the probability of detecting other aircrafts by: a. Minimizing the duration of eye rests and making as many eye movements as possible b. Moving the head frequently to alter the apparent motion of any distant object c. Maximizing the time spent looking in each sector to allow the maximum chance of detecting movement d. Maintaining as far as possible a lookout ahead of the aircraft and relying on peripheral vision to detect any movement from the side

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Last Answer : a. Minimizing the duration of eye rests and making as many eye movements as possible

A crate weighing 40 kg rests on a cart moving with an acceleration W. The coefficient of friction between the cart and the crate is a.2.45 m/sec2 b.4.00 m/sec2 c.0.25 m/sec2 d.4.16 m/sec2 e.1.25 m/sec2

Description : A crate weighing 40 kg rests on a cart moving with an acceleration W. The coefficient of friction between the cart and the crate is a.2.45 m/sec2 b.4.00 m/sec2 c.0.25 m/sec2 d.4.16 m/sec2 e.1.25 m/sec2

Last Answer : a. 2.45 m/sec2

A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be a.2.5 m/s b.zero c.5 m/s d.10 m/s e.107 dynes

Description : A ball A of mass 0.25 kg moving on a smooth horizontal table with a velocity of 10 m/s strikes an identical stationary ball B on the table. If the impact is perfectly elastic, the velocity of the ball B just after the impact will be a.2.5 m/s b.zero c.5 m/s d.10 m/s e.107 dynes

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A cantilever shaft having 50 mm diameter and a length of 300 mm has a disc of mass 100 kg at its free end. The Young’s modulus for the shaft material is 200 GN/m 2 . Determine the frequency of transverse vibrations of the shaft. a) 31 b) 35 c) 37 d) 41

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An 8 kilogram mass resting on a frictionless horizontal surface is attached to a spring with a force constant of 50 Newtons per meter. If the velocity of the mass through the equilibrium position is 5 meters per second, what is the mass's maximum displacement from equilibrium?

Description : An 8 kilogram mass resting on a frictionless horizontal surface is attached to a spring with a force constant of 50 Newtons per meter. If the velocity of the mass through the equilibrium position is 5 meters per second, what is the mass's maximum displacement from equilibrium?

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A spring with a force constant of 20 newtons per meter is known to obey Hooke's Law. The spring is attached to a mass of 5 kilograms and placed on a horizontal, frictionless surface. The mass is displaced 3 meters from its equilibrium position and released. What is the kinetic energy of the mass as it passes through its equilibrium position?

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Last Answer : ANSWER: 90 JOULES

Is it true that more force must be applied when pushing something across rough surface?

Description : Is it true that more force must be applied when pushing something across rough surface?

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One joule is the energy required to (A) Raise the temperature of 1 gm of water by 1°C (B) Raise the temperature of 1 kg of water by 1°C (C) Move a mass of 1 gm by 1 cm distance by a force of 1 Newton (D) Move a mass of 1 kg by 1 m distance by a force of 1 Newton

Description : One joule is the energy required to (A) Raise the temperature of 1 gm of water by 1°C (B) Raise the temperature of 1 kg of water by 1°C (C) Move a mass of 1 gm by 1 cm distance by a force of 1 Newton (D) Move a mass of 1 kg by 1 m distance by a force of 1 Newton

Last Answer : Answer : D

The coefficient of friction is a.The tangent of the angle between the normal reaction and direction of limiting friction b.The tangent of the angle between the normal reaction and the resultant of the normal reaction and the limiting friction c.The tangent of the angle of the net resultant force with the direction of motion d.The tangent of the angle between the horizontal plane and the resultant force e.The angle between the normal reaction and the resultant of normal reaction and the limiting friction

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During the motion of a projectile fired from the earth surface, ______. (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant

Description : During the motion of a projectile fired from the earth surface, ______. (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant

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During the motion of a projectile fired from the earth surface, _______ (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant

Description : During the motion of a projectile fired from the earth surface, _______ (1) its kinetic energy remains constant (2) its momentum remains constant (3) vertical component of its velocity remains constant (4) horizontal component of its velocity remains constant

Last Answer : horizontal component of its velocity remains constant

A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move down the plane to that when it move up the plane would be in the regions a.8 ? 10 b.5 ? 7 c.2 ? 3 d.4 ? 6 e.10 ? 13

Description : A particle moves along a rough plane inclined at 30? to the horizontal. The co-efficient of friction between the particle and the plane is 0.1. Its initial velocity is 15 m/sec. The ratio of the velocity of the particle when it move ... be in the regions a.8 ? 10 b.5 ? 7 c.2 ? 3 d.4 ? 6 e.10 ? 13

Last Answer : b. 5 ? 7

A mass of 5 kg moves on a smooth horizontal plane with a speed of 8 m/s attached to a fixed point on the plane by a string of length 4m. Tension in the string is a.785 b.80N c.392.4N d.None of the above e.Tapered bearing

Description : A mass of 5 kg moves on a smooth horizontal plane with a speed of 8 m/s attached to a fixed point on the plane by a string of length 4m. Tension in the string is a.785 b.80N c.392.4N d.None of the above e.Tapered bearing

Last Answer : b. 80N

Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal table

Description : Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal table

Last Answer : Calculate the coefficient of static friction for an object of mass 50 kg placed on horizontal ... object just moves when spring balance shows 50N.

A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time varying magnetic field `B = (hat (i) +

Description : A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time varying magnetic field `B = (hat (i) +

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A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time varying magnetic field `B = (hat (i) +

Description : A uniform conducting ring of mass `pi` kg and radius 1 m is kept on smooth horizontal table. A uniform but time varying magnetic field `B = (hat (i) +

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Which of the following physical quantities changes or tends to change the state of rest or of uniform motion of a body in a straight line? (1) Momentum (2) Mass (3) Force (4) Inertia

Description : Which of the following physical quantities changes or tends to change the state of rest or of uniform motion of a body in a straight line? (1) Momentum (2) Mass (3) Force (4) Inertia

Last Answer : (3) Force Explanation: Force is an agent which changes or tends to change the state of rest or of uniform motion of a body.

A horizontal load of 120 kg/mt is to be carried by a cable suspended between supports at same level and 60 mts apart. If the maximum permissible tension is 36,000 kg the required length of cable is a.63.3 mets b.62.5 mts c.60.8 mts d.107 dynes e.60.1 mts

Description : A horizontal load of 120 kg/mt is to be carried by a cable suspended between supports at same level and 60 mts apart. If the maximum permissible tension is 36,000 kg the required length of cable is a.63.3 mets b.62.5 mts c.60.8 mts d.107 dynes e.60.1 mts

Last Answer : e. 60.1 mts

Which one of the following is not the law of dry friction? a.If friction is neglected, the reactions are always normal to the surfaces on contact b.Friction always acts to oppose the relative motion of the free body c.If static friction is acting, the value of the friction force may vary from zero to its maximum value d.The force of friction is always normal to the surface e.All of the above

Description : Which one of the following is not the law of dry friction? a.If friction is neglected, the reactions are always normal to the surfaces on contact b.Friction always acts to oppose the relative motion of ... its maximum value d.The force of friction is always normal to the surface e.All of the above

Last Answer : d. The force of friction is always normal to the surface

A force of 100 Newtons acts for 0.5 seconds on a body of mass 20 kg which is initially at rest. The velocity attained by the body is a.20 m/s b.5 m/s c.2.5 m/s d.0.5 m/s e.107 dynes

Description : A force of 100 Newtons acts for 0.5 seconds on a body of mass 20 kg which is initially at rest. The velocity attained by the body is a.20 m/s b.5 m/s c.2.5 m/s d.0.5 m/s e.107 dynes

Last Answer : c. 2.5 m/s

Force applied on a body of mass 5 kg is directly proportional to the acceleration produced in the body. Represent this solution as a linear equation in two variables. -Maths 9th

Description : Force applied on a body of mass 5 kg is directly proportional to the acceleration produced in the body. Represent this solution as a linear equation in two variables. -Maths 9th

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Description : Find the friction force due to air on a body of mass 1 kg falling with acceleration `8 m//s^(2)` :-

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A body of mass `(1)/(4) kg` moving with velocity `12 m//s` is stopped by applying a force of 0.6 N. Then impulse is :-

Description : A body of mass `(1)/(4) kg` moving with velocity `12 m//s` is stopped by applying a force of 0.6 N. Then impulse is :-

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A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

Description : A hot body will radiate heat most rapidly, if its surface is (A) White & rough (B) Black & rough (C) White & polished (D) Black & polished

Last Answer : (B) Black & rough

Which organ of the body never rests? (1) Eyes (2) Pancreas (3) Liver (4) Heart

Description : Which organ of the body never rests? (1) Eyes (2) Pancreas (3) Liver (4) Heart

Last Answer : (4) Heart Explanation: Heart is the only organ in the body which never rest throughout the entire life. The heart is a hollow muscle that pumps blood throughout the blood vessels by repeated, ... 72 beats per minute, will beat approximately 2.5 billion times during an average 66 year lifespan.

Which organ of the body never rests? (1) Muscles (2) Nerves (3) Tongue (4) Heart

Description : Which organ of the body never rests? (1) Muscles (2) Nerves (3) Tongue (4) Heart

Last Answer : (4) Heart Explanation: Heart is the only organ in the body which never rest throughout the entire life. The heart is a hollow muscle that pumps blood throughout the blood vessels by repeated, ... 72 beats per minute, will beat approximately 2.5 billion times during an average 66 year lifespan.

Which organ of the body never rests ? (1) Eyes (2) Pancreas (3) Liver (4) Heart

Description : Which organ of the body never rests ? (1) Eyes (2) Pancreas (3) Liver (4) Heart

Last Answer : Heart

A plane is inclinea at angle ? to horizontal. If a body can just rest on a plane, determine the least force to draw the body up the plance a.W sin2? b.2 W cos2? c.107 dynes d.W cos2? e.2 W sin2?

Description : A plane is inclinea at angle ? to horizontal. If a body can just rest on a plane, determine the least force to draw the body up the plance a.W sin2? b.2 W cos2? c.107 dynes d.W cos2? e.2 W sin2?

Last Answer : a. W sin2?

A body weighs 5.6 kg wt on the surface of the Earth. How much will be its weight on a planet whose mass is 1/7 times

Description : A body weighs 5.6 kg wt on the surface of the Earth. How much will be its weight on a planet whose mass is 1/7 times

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The limiting force of fiction is a.The friction force acting on a body when it is in motion b.The value of friction force which stops the movement of the body c.The value of friction force which cannot exceed under a situation d.The friction force acting when the body is just about to move e.Double of the normal friction

Description : The limiting force of fiction is a.The friction force acting on a body when it is in motion b.The value of friction force which stops the movement of the body c.The value of friction force which ... d.The friction force acting when the body is just about to move e.Double of the normal friction

Last Answer : d. The friction force acting when the body is just about to move

Coefficient of friction is the (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force acting when the body is just about to move (D) The friction force acting when the body is in motion

Description : Coefficient of friction is the  (A) Angle between normal reaction and the resultant of normal reaction and the limiting friction  (B) Ratio of limiting friction and normal reaction  (C) The ... body is just about to move  (D) The friction force acting when the body is in motion 

Last Answer : (B) Ratio of limiting friction and normal reaction

Kinetic friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force acting when the body is just about to move (D) The friction force acting when the body is in motion

Description : Kinetic friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and the limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction force ... body is just about to move (D) The friction force acting when the body is in motion

Last Answer : (D) The friction force acting when the body is in motion

Limiting force of friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction (B) Ratio of limiting friction and normal reaction(C) The friction force acting when the body is just about to move (D) The friction force acting when the body is in motion

Description : Limiting force of friction is the (A) Tangent of angle between normal reaction and the resultant of normal reaction and limiting friction (B) Ratio of limiting friction and normal reaction (C) The friction ... body is just about to move (D) The friction force acting when the body is in motion

Last Answer : (C) The friction force acting when the body is just about to move

Hot water (0.01 m3 /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m3 /min) of density 800 kg/m3 and specific heat of 2 kJ/kg.K enters at 20°C. The log mean temperature difference in °C is approximately (A) 32 (B) 37 (C) 45 (D) 50

Description : Hot water (0.01 m3 /min) enters the tube side of a counter current shell and tube heat exchanger at 80°C and leaves at 50°C. Cold oil (0.05 m3 /min) of density 800 kg/m3 and specific heat of ... mean temperature difference in °C is approximately (A) 32 (B) 37 (C) 45 (D) 50

Last Answer : (A) 32

The maximum weight limit for a bag conveyed by the railway mail service is a) 28 Kg b) 30 Kg c) 14 Kg d) 37 Kg

Description : The maximum weight limit for a bag conveyed by the railway mail service is a) 28 Kg b) 30 Kg c) 14 Kg d) 37 Kg

Last Answer : d) 37 Kg

Mark correct option relating to limit of weigh of mails a) The weight to be carried by mail runner on a man should not exceed 14 Kg b) When it is carried by each man should not exceed 28 Kg c) When it is carried by trolley the weight of the parcel should not exceed 37 Kg d) The weight of postal articles including parcel and cash to be carried by a postman or village postman should not exceed 10 kg e) All the above

Description : Mark correct option relating to limit of weigh of mails a) The weight to be carried by mail runner on a man should not exceed 14 Kg b) When it is carried by each man should not exceed 28 Kg c) ... and cash to be carried by a postman or village postman should not exceed 10 kg e) All the above

Last Answer : e) All the above