Question # 1

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

Which is unimportant in describing the satellites orbit.

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Distance of satellite from earth's center

Gravitational constant G

Mass of satellite

Mass of earth

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

How many orbiting satellites from the Global positing system.

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3

12

24

22

The equations of angular motion hold only in case when the axis of rotation is

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Moving

Fixed

Both a and b

None of these

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

In rotational motion the analogous of mass is

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Angular acceleration

Torque

Moment of inertia

Angular momentum

Angular acceleration is produced by

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Power

Torque

Pressure

Force

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

Angular displacement is

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Scalar quantity

Vector quantity

Basic quantity

None of these

Time rate of change of angular displacement is called

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Linear velocity

Angular velocity

Rotational velocity

Vibrational velocity

Direction of angular acceleration is always along

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x-axis

y -axis

z-axis

The axis of rotation

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

2 radian = ____

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2 m

4 m

57.3 m

114.6 m

The centripetal force is always directed

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Away from the centre along the radius

Along the direction of motion

Opposite to the motion of the body

Towards the centre along the radius

For angular momentum of system to remain constant, external torque should be.

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Small

Large

Zero

None

Height of geo stationary orbit of the satellite above the earth is.

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300 km

250 km

400 km

None of these

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