Question # 1

One revolution is equal to.

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90^o

180^o

360^o

270^o

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 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

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

In case of planets centripetal force is provided by

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Coulomb's force

Electrostatic force

Gravitational force

Magnetic force

Satellites are the objects that orbit around the

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Moon

Sun

Earth

Star

The product of rotational inertial 'I' and angular velocity ' w' is equal to.

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Torque

Linear momentum

Angular momentum

Force

The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

A man weight 1000 N in a stationary lift. If the lift moves up with an acceleration of 10 ms-2. then its weight becomes.

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1000 N

2000 N

3000 N

0 N

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

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

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

The moment of inertia is analogue to

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Mass

Weight

Torque

Force

The value of angular momentum is maximum when 0 is

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90^o

60^o

75^o

45^o

Centripetal force perform

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Maximum work

Minimum work

Negative work

No work

The value of a time period of allow flying satellite is

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1 year

84 minutes

28 hours

1 day

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

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Small

Large

Zero

None

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 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

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

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Angular velocity

Linear momentum

Angular momentum

Angular acceleration

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