Question # 1

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

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Small

Large

Zero

None

In rotational motion the analogous of mass is

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Angular acceleration

Torque

Moment of inertia

Angular momentum

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

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 maximum velocity necessary to put a satellite into orbit is

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7.1 kms-1

7.3 kms-1

7.9 kms-1

8,9 kms-1

A 60 kg man in an elevator is moving upward with an acceleration of 9.8 ms-2. The apparent weight of the man.

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Increase

Decreases

Remain constant

Becomes zero

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

the height of the geostationary satellite above the equator is.

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35000 km

36000 km

34000 km

33000 km

Weight of a 60 kg man in moving elevator with constant acceleration of 1/2 f

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Zero

300 N

600 N

200 N

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

INTELSAT VI satellite operates at microwave frequencies of.

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2,4,6,10 GHz

4,6,11 and 14 MHz

4,6,11 and 14 GHz

2,4,6 AND 14 GHz

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

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Accelerating

Vibrating

Rotating

Oscillating

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

The formula of centripetal acceleration is

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The direction of angular velocity is determined.

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Left hands rule

Head to tail rule

Right hand rule

General rule

A wheel of radius 50 cm having an angular speed of a rad /s have linear speed.

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1.5 m/s

3.5 m/s

2.5 m/s

4.5 m/s

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

In case of planets centripetal force is provided by

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Coulomb's force

Electrostatic force

Gravitational force

Magnetic force

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