Q. A particle is dropped from the top of a tower 60 m high and another is projected upwards from the foot of the tower to meet the first particle at a height of 15.9 m. The velocity of projection of the second particle is

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Q. The point about which combined motion of rotation and translation of a rigid body takes place, is known as

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Q. The gravitational force makes a satellite go round the earth in a circular orbit, if it is projected with an initial velocity of

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Q. Pick up the incorrect statement from the following. In a simple harmonic motion

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Q. When a body moves round a fixed axis, it has

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Q. For a self-locking machine, the efficiency should be

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Q. The Centre of gravity of a 10 x 15 x 5 cm T section from its bottom, is

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Q. The rate of change of displacement of a body with respect to its surrounding, is known

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Q. A body of weight 14 g appears to weight 13 g when weighed by a spring balance in a moving lift. The acceleration of the lift at that moment was

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Q. If two equal forces of magnitude P act at an angle θ, their resultant, will be

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Q. Two parallel forces 20 kg and 15 kg act. In order that the distance of the resultant from 20 kg force may be the same as that of the former resultant was from 15 kg, the 20 kg force is diminished by

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Q. The motion of a particle moving with S.H.M. from an extremity to the other, constitutes

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Q. The velocity ratio of an inclined plane of inclination θ with horizontal for lifting a load is

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Q. When a body slides down an inclined surface, the acceleration (f) of the body, is given by

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Q. Moment of interia of a squares of side fa about an axis through its centre of gravity, is

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Q. The frequency of oscillation on moon as compared to that on earth, will be

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Q. The piston of a steam engine moves with a simple harmonic motion. The crank rotates 120 r.p.m. and the stroke length is 2 metres. The linear velocity of the piston when it is at a distance of 0.5 metre from the centre, is

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Q. If a ball which is dropped from a height of 2.25 m on a smooth floor attains the height of bounce equal to 1.00 m, the coefficient of the restitution between the ball and floor, is

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Q. A rigid body suspended Vertically at a point and oscillating with a small amplitude under the action of the force of gravity, is called

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Q. When a body falls freely under gravitational force, it possesses

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