Question # 1

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

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

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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

One revolution is equal to.

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90^o

180^o

360^o

270^o

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

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

the height of the geostationary satellite above the equator is.

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35000 km

36000 km

34000 km

33000 km

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

A body rotating with angular velocity of 2 radian/s and linear velocity is also 2 ms-1, then radius of circle is.

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1 m

0.5 m

4 m

2 m

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 moment of inertia is analogue to

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Mass

Weight

Torque

Force

Angular velocity determines, How fast or, How slow a body is

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Accelerating

Vibrating

Rotating

Oscillating

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

Time period of geostationary satellite of radius 'R' is

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1 hour

48 min

1 day

1 month

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

When a body moves in circular motion, the angle between linear and angular velocity is.

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180^o

90^o

60^o

75.3^o

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

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