Question # 1

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 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

Which quantity of the following is dimensionless.

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Angular velocity

Centripetal force

Angular acceleration

Angular displacement

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

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

The direction of angular velocity is determined.

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Left hands rule

Head to tail rule

Right hand rule

General rule

The unit of rotational K.E. is

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rAD/SEC

Js

J

Kgm2

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

the angular version of F= ma is

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L = 1w

pi = 1a

l = pi a

f = mv/t

The rate of change of angular velocity is called

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Angular velocity

Angular acceleration

Angular displacement

Angular speed

Satellites are the objects that orbit around the

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Moon

Sun

Earth

Star

The SI unit of angular momentum is

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J.S-2

J.S-1

J.S

J.m

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

Time period of geostationary satellite of radius 'R' is

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1 hour

48 min

1 day

1 month

When a body is moving along a circular path, then such a motion is called

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Vibratory motion

Rotatory motion

Linear motion

None of these

The orbital angular momentum is associated with the motion of a body along

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Straight path

Circular path

Curved path

Along any path

Apparent weight of a man is in upward accelerated lift will

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Increases

Decreases

Remain same

Increases then decrees

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

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