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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution

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

View solution