Question # 1

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

Angular acceleration is produced by

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Power

Torque

Pressure

Force

Close orbiting satellites orbit the earth at a height of about

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400 km

4000 km

400 m

400 cm

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 moment of inertia is analogue to

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Mass

Weight

Torque

Force

The angle between circumference of a circle and center is

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The diver spins faster when moment of inertia becomes.

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smaller

Greater

Constant

Zero

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

If the are of a circle equals its radius, then the angle subtended at the center will be

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1 degree

One rotation

One radian

Half rotation

The amount of inertia of 10 kg hoop about the axis of rotation perpendicular to its plane having radius 5 m is

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50 kgm2

100 K gm2

150 K gm2

250 K gm2

The SI unit of angular displacement is.

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Degree

Revolution

Radian

Rotation

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

The minimum number of correctly positioned communication satellites to cover whole populated earth is.

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2

3

100

200

In rotational motion the torque is equal to rate of change of

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

A man of 1 kg is freefalling. The force of gravity is

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1 N

9.8 N

0.5 N

Zero

The relation between linear and angular velocity is

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the angular version of F= ma is

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L = 1w

pi = 1a

l = pi a

f = mv/t

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