Question # 1

If a gymnast is sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will:

Choose an answer

Increase

Decrease

Remains constant

None of these

A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If centripetal acceleration is 9.8 m/sec², then its angular velocity is rad/sec is:

Choose an answer

22/7

7

14

21

Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.

Choose an answer

Disc, sphere

sphere, hoop

Thin rod, hoop

Hoop,disc

Direction of motion_______ in circular of motion:

Choose an answer

Changes off and on

Changes continuously

Does not change

None of them

A point on the rim of a wheel moves 0.2 m when the wheel turns through an angle of 14.3 degrees. The radius of the wheel is:

Choose an answer

0.05 m

0.08 m

0.8 m

0.008 m

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

Choose an answer

10 m

12 m

13 m

15 m

Direction of motion _______ in circular motion

Choose an answer

Changes off and on

Changes continuously

Does not change

None of them

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

Choose an answer

0.05 m

0.08 m

0.8 m

0.008 m

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Choose an answer

Greater than

smaller than

Equal to

None of these

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Choose an answer

Inverse square law

Bending of light

Both A and B

None of above

Conventionally the angular velocity is directed at an angle of

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

One radian is equal to:

Choose an answer

30.3°

45.3°

50.3°

57.3°

Angular momentum is a:

Choose an answer

vector quantity

Imaginary quantity

Complex Quantity

Scalar Quantity

In case of planets, the necessary acceleration is provided by:

Choose an answer

Gravitational force

Coulomb force

Frictional force

None of these

______ plays the same role during angular motion as played by the mass in linear motion

Choose an answer

Torque

Angular Momentum

Moment of a force

Moment of inertia

More Classes

Other Links

Physics ECAT Pre Engineering Chapter 5 Circular Motion Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer