Description : When a running car stops suddenly, the passengers tends to lean forward because of: (1) centrifugal force (2) inertia of rest (3) inertia of motion (4) gravitational force
Last Answer : (3) inertia of motion Explanation: When a running car stops suddenly, the passengers tend to lean forward due to inertia of motion. Inertia is that property of a body due to which it resists a change in its state of rest or of uniform motion.
Description : The equation of motion for spring mass system includes A. Inertia Force B. Spring Force C. Both D. Gravitational force
Last Answer : C. Both
Last Answer : inertia of motion
Description : what is the acceleration of a 1.4 kg object if the gravitational force pulls downward on it , but air resistance pushes upward on it with a force of 2.5 N?
Last Answer : if g = 10(m/s)/s then force down = ma = 10*1.4=14n14n-2.5n=11.5na=f/m = 11.5/1.4 = 8.21 (m/s/)s
Description : If the gravitational force between the earth and object always causes the same acceleration why does a feather fall more slowly than a hammer does?
Last Answer : Need answer
Description : Why Does that mass of an object affect the strength of the gravitational force of the earth acting on it?
Last Answer : Feel Free to Answer
Description : The gravitational force between two object increases as mass?
Last Answer : yes as G =(M)(m) thus as mass increases d force of gravitational also increases b/w d bodies. (r)(r)
Description : What do vertical component of the projectile motion of an object depend on?
Last Answer : Both of these
Description : Derive the expression for average velocity and instantaneous velocity for the motion of an object in x-y plane.
Last Answer : Derive the expression for average velocity and instantaneous velocity for the motion of an object in x-y plane.
Description : Derive the expression for average acceleration and instantaneous acceleration for the motion of an object in x-y plane.
Last Answer : Derive the expression for average acceleration and instantaneous acceleration for the motion of an object in x-y plane.
Description : The total pressure force on a plane area is equal to the area multiplied by the intensity of pressure at the Centroid, if (A) The area is horizontal (B) The area is vertical (C) The area is inclined (D) All of the above
Last Answer : Answer: Option D
Description : A particle is acted upon by a force of constant magnitude which is always perpendicular to the velocity of the particle. The motion of the particle takes place in a plane. It follows that (a) Its ... ) Its acceleration is constant (c) Its kinetic energy is constant (d) It moves in a circular path
Last Answer : Ans:(d)
Description : If the angle of friction is zero a body will experience a.Infinite friction b.Zero friction c.The force of friction will act normal to the plane d.The force of friction will act in the direction of motion e.None of the above
Last Answer : b. Zero friction
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
Last Answer : a. About 16?
Description : 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 ... e.The angle between the normal reaction and the resultant of normal reaction and the limiting friction
Last Answer : a. The tangent of the angle between the normal reaction and direction of limiting friction
Description : How does the unbalanced force of gravity affect the horizontal and vertical velocity of an object in projectile?
Last Answer : In the absence of air resistance, the force of gravity has noeffect on the horizontalcomponent of a projectile's velocity, and causes the verticalcomponent of its velocityto increase by 9.8 meters (32.2 feet) per second downward forevery second of its flight.
Description : Is the frictional force to slow an object in motion?
Last Answer : Kinetic
Description : According to newton second law of motion, the acceleration of an object equals the net force acting on the object divide by the object?
Last Answer : Mass.
Description : An object at rest will remain at rest and an object in motion will remain in motion until and unless it is acted upon by an external force. This is Newton's – (1) First law (2) Second law (3) Third law (4) Fourth law
Last Answer : (1) First law Explanation: Newton's first law of motion - sometimes referred to as the law of inertia-states that every object will remain at rest or in uniform motion in a straight line unless ... its state by the action of an external force. This is normally taken as the definition of inertia.
Description : How can inclined plane and amp a pulley r used to change the amount of force needed to move an object?
Description : The cause for the Tsunami, as deduced by the seismologists, is – (1) Gravitational pull of the moon (2) Low pressure trough in the ocean (3) Deformation of sea floor and vertical displacement of water (4) Sudden change in the monsoon wind
Last Answer : (3) Deformation of sea floor and vertical displacement of water Explanation: Earthquakes, volcanic eruptions and other underwater explosions (including detonations of underwater nuclear devices), landslides, ... the sea, the water above the deformed area is displaced from its equilibrium position.
Description : The cause for the Tsunami, as deduced by the seismologists, is (1) gravitational pull of the moon (2) low pressure trough in the ocean (3) deformation of sea floor and vertical displacement of water (4) sudden change in the monsoon wind
Last Answer : deformation of sea floor and vertical displacement of water
Description : The direct shear test suffers from the following disadvantage: (A) Drain condition cannot be controlled (B) Pore water pressure cannot be measured (C) Shear stress on the failure plane is not uniform (D) The area under the shear and vertical loads does not remain constant throughout the test
Last Answer : Answer: Option C
Description : A cylindrical specimen of saturated soil failed under an axial vertical stress of 100kN/m² when it was laterally unconfmed. The failure plane was inclined to the horizontal plane at an angle of 45°. The values of cohesion and angle of ... N/mm² and 0° (C) 0.2 N/mm² and 0° (D) 0.05 N/mm² and 45°
Last Answer : Answer: Option B
Description : Period of simple harmonic motion of a spiral spring or elastic thread is given by A. T = 2π (extension produced/gravitational field strength) B. T = 2π (extension produced/√( ... (extension produced)/gravitational field strength) D. T = 2π √(extension produced/gravitational field strength)
Last Answer : T = 2π × √(extension produced/gravitational field strength)
Description : Without electrical, mechanical, gravitational, surface tension and motion effects, a system is called _____ system. A. Simple B. Simple compressible C. Compressible D. Independent
Last Answer : Simple compressible
Description : The principle of conservation of energy cannot be applied in case of a.Flow of heat through a metal b.Ideal flow of water in a pipe c.Simple pendulum d.Sliding of a particle along inclined plane with friction e.A particle moving in gravitational field
Last Answer : e. A particle moving in gravitational field
Description : What are the energy transfers of the six simple machines for example an incline plane is gravitational potential energy to mechanical energy. I want to know what are the other fives and for levers I would like to know class one and class 2?
Last Answer : \Delta E\Delta t\geq
Description : In order to keep a body moving in a circle, there exists a force on it that is directed toward the center of the circle. This force is known asA. Centrifugal force B. Centripetal force C. Gravitational Force D. magnetic force
Last Answer : Centripetal force
Description : Michael Faraday was known by his work on: (a) Electric force (b) Weak nuclear force (c) Strong nuclear force (d) Gravitational force
Last Answer : (a) Electric force
Description : The instrument which is used in plane tabling for obtaining horizontal and vertical distances directly without resorting to chaining, is known as (A) Plane alidade (B) Telescopic alidade (C) Clinometer (D) Tacheometer
Last Answer : (B) Telescopic alidade
Description : The operation of revolving a plane table about its vertical axis so that all lines on the sheet become parallel to corresponding lines on the ground, is known (A) Levelling (B) Centering (C) Orientation (D) Setting
Last Answer : (C) Orientation
Description : Consider the following pre-conditions for correct use of a theodolite: 1. The vertical axis need not be perpendicular to the plane of the plate level bubble. 2. The line of sight must be perpendicular to the horizontal axis. 3. The axis of ... ? (a) 1, 2, 3 & 4 (b) 2 only (c) 3 only (d) 1 & 4 only
Last Answer : (b) 2 only
Description : The weight of an object at the poles is greater than at the equator. This is because (a) Of the shape of the earth (b) The attraction of the moon is maximum at the earth’s surface (c) The attraction of the sun is maximum at the earth’s surface (d) Gravitational pull is more at the poles
Description : What factors do the gravitational potential energy stored between an object and earth depends on?
Description : If an object is thrown up in the air how does its gravitational potential energy change?
Last Answer : The higher an object travels, the greater its potentialenergy.
Description : What gravitational exist between you and every object in the universe?
Last Answer : "attraction"
Description : Work done on an object to bring it to certain point in space is called A. gravitational potential energy B. potential energy C. kinetic energy D. mechanical energy
Last Answer : kinetic energy
Description : The gravitational potential energy of an object close to the ground varies: w) inversely as its distance from the ground x) directly as its distance from the ground y) inversely as the square of its distance from the ground z) directly as the square of its distance from the ground
Last Answer : ANSWER: X -- DIRECTLY AS ITS DISTANCE FROM THE GROUND
Description : In a theodolite the line passing through the intersection of the horizontal and vertical cross hairs and the optical centre of the object glass and its continuation, is known as (a) Horizontal axis (b) Vertical axis (c) Line of collination (d) Line of sight (e) Either of c or d above*
Last Answer : e) Either of c or d above*
Description : Vertical section of plough influence A. Pulverisation B. Depth of cut C. Width of cut. D. Direction of pull
Last Answer : Pulverisation
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
Last Answer : c. Indeterminate
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
Last Answer : c. Determinate but depends on the acceleration of the cylinder
Description : When the body vibrates under the influence of external force, then the body is said to be under ___________ . * 1 point (A) free vibrations (B) natural vibrations (C) forced vibrations (D) damped vibrations
Last Answer : (C) forced vibrations
Description : A fundamental difference between the radio and the motion pictures is that of Options: A) Radio is more responsive to public opinion B) Movies more deliberately try to influence behaviour C) Radio programmes are less subject to control D) Movies employ no self-censorship like the radio
Last Answer : A) Radio is more responsive to public opinion
Description : If the distance between the earth and the sun were twice what it is now, the gravitational force exerted on the earth by the sun would be (a) twice as large as it is now (b) four times as large as it is now (c) half of what it is now (d) one-fourth of what it is now
Description : The gravitational force with which the sun attracts the earth 1. is less than the force with which the earth attracts the sun 2. is the same as the force with which earth attracts the sun 3. is more than the force with which ... is/are correct? (a) 1 only (b) 2 and 4 (c) 1 and 4 (d) 3 and 4
Last Answer : Ans:(b)
Description : The oil in the wick of an oil lamp rises up due to (a) Pressure difference (b) Capillary action (c) Low viscosity of oil (d) Gravitational force
Description : When milk is churned, the cream from it is separated due to (a) Gravitational force (b) Centrifugal force (c) Frictional force (d) Heat