Q. The practical units of work, is

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Q. From a solid cylinder of height 8 cm and radius 4 cm, a right circular cone is scooped out on the same base and having the same height as that of the cylinder. The c.g. of the remainder is at a height of

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Q. The unit of moments in M.K.S system, is

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Q. The rotational velocity of a satellite is increased by 450 m per second if its launch is done from equator

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Q. On a mass m describing a circular path of radius r, the centrifugal force

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

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

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

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

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

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

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

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