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

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

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

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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. A point subjected to a number of forces will be in equilibrium, if

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Q. M.I. of solid sphere, is

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Q. The centre of gravity of a homogenous body is the point at which the whole

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Q. Pick up the correct statement from the following :

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Q. Centre of gravity of a thin hollow cone lies on the axis of symmmetry at a height of

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Q. A ball of mass 1 kg moving with a velocity of 2 m/sec collides a stationary ball of mass 2 kg and comes to rest after impact. The velocity of the second ball after impact will be

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Q. Periodic time of a particle moving with simple harmonic motion is the time taken by the particle for

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