## 51. Two forces act an angle of 120°. If the greater force is 50 kg and their resultant is perpendicular to the smaller force, the smaller force is

## 52. M.I. of solid sphere, is

## 53. The following is not a law of static friction:

## 54. A hoop of radius 3 m weighs 100 kg. It rolls along a horizontal floor so that at its centre of mass has a speed of 200 mm/sec. The work required to stop the hoop is

## 55. A satellite moves in its orbit around the earth due to

## 56. A satellite goes on moving along its orbit round the earth due to

## 57. A bullet weighing 200 g is fired horizontally with a velocity of 25 m/sec from a gun carried on a carriage which together with the gun weighs 100 kg. The velocity of recoil of the gun, will be

## 58. Two objects moving with uniform speeds are 5 m apart after 1 second when they move towards each other and are 1 m apart when they move in the same direction.

The speeds of the objects are:

The speeds of the objects are:

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

## 60. If a particle moves with a uniform angular velocity $$\omega $$ radians/sec along the circumference of a circle of radius r, the equation for the velocity of the particle, is

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