Question # 1

Angular acceleration is produced by

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Power

Torque

Pressure

Force

Moment of inertia is measure din

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Kg m2

Kg m-2

Rad s-1

Joule second

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

Which one of the following is into directed along the axis of rotation

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Angular acceleration

Angular momentum

Centripetal acceleration

Angular displacement

The value of of 'g' at the centre of the earth is

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Infinite

2 g

3 g

zero

The dimensions of angular velocity are

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[LT-1]

[LT-2]

[T-1]

[L-1T-1]

The relation between linear and angular velocity is

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the angular version of F= ma is

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L = 1w

pi = 1a

l = pi a

f = mv/t

If a body is moving in the counter clockwise direction the direction of angular velocity will be

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Toward the centre

Away from the centre

along the linear velocity

Perpendicular to both radius and linear velocity

The motion of a body moving along a circular path is called.

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Translational motion

Angular motion

Vibratory motion

Linear motion

The largest satellite system is managed by

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116 countries

126 countries

136 countries

140 countries

When a body is whirled in a horizontal circle by means of string, the centripetal force is supplied by

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Mass of body

Velocity of a body

Tension in the string

Centripetal acceleration

Time rate of change of angular displacement is called

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Linear velocity

Angular velocity

Rotational velocity

Vibrational velocity

One radian is equal to.

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75.3^o

57.3^o

35.7^o

73.3^o

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

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

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

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

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