Question # 1

Moment of linear momentum is called.

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Moment arm

Moment of inertia

Inertia

Angular momentum

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

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Inverse square law

Bending of light

Both A and B

None of above

In rotational motion, analogue of force F us called:

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Couple

Torque

Mass

Moment of intertia

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

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Greater than

smaller than

Equal to

None of these

The number of "Earth stations" which transmit signals to satellites and receive signals from them are:

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3

24

126

200

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

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Increase

Decrease

Remain constant

None of these

The number of countries who manage the largest satellite system is:

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3

24

126

200

Centripetal acceleration is also called ________ acceleration

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Tangential

Radial

Angular

None of these

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec^-2comes out to be

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980 N

580 N

1380 N

Zero

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:

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10 m

12 m

13 m

15 m

Moment of inertia depends upon:

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Mass

Selection of axis of rotation

Both of them

None of these

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:

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0.05 m

0.08 m

0.8 m

0.008 m

Direction of motion _______ in circular motion

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Changes off and on

Changes continuously

Does not change

None of them

Angular momentum is a:

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vector quantity

Imaginary quantity

Complex Quantity

Scalar Quantity

When angular acceleration is positive, the body rotates:

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Slower

Slowest

Faster

None of these

When angular acceleration is positive, the body rotates:

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Slower

Slowest

Faster

None of these

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

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