Question # 1

If a body is moving in the counter clockwise direction the direction of angular velocity will be

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Toward the centre

Away from the centre

along the linear velocity

Perpendicular to both radius and linear velocity

A man of mass 5 kg is falling freely, the fore acting on it will be

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5 N

9.8 N

19.6 N

49 N

The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

The formula of centripetal acceleration is

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Artificial gravity can be created in the space ship by

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Revolving around the earth

Spinning around its own axis

Increasing its velocity

Decreasing it svelocity

The angular acceleration a =

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One revolution is equal to.

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90^o

180^o

360^o

270^o

The diver spin faster when moment of inertia becomes.

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smaller

Greater

Constant

Equal

All point of the rigid body rotating about a fixed axis do not have same.

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Angular acceleration

Angular speed

speed

Angular displacement

A body starting from rest attains angular acceleration of 5 rad s-2 in 2 second final angular velocity will be.

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10 rad s-1

7 rad s-1

3 rad s-1

2 rad s-1

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

The weight of the body at the centre of earth is

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Maximum

Minimum

Zero

Infinite

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

Angular momentum has the same unit as

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Impulse x distance

Power x time

Linear x time

work x frequency

The direction of angular acceleration is

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Along the axis of rotation

Perpendicular to the axis of rotation

Opposite to axis of rotation

None of these

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

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Physics Fsc Part 1 Chapter 5 Online Test MCQs With Answers

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