Question # 1

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 rate of change of angular velocity is called

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Angular velocity

Angular acceleration

Angular displacement

Angular speed

Angular acceleration is produced by

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Power

Torque

Pressure

Force

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

The formula of centripetal acceleration is

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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

Pi radian is equal to.

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0^o

90^o

180^o

57.3^o

The work done by centripetal force is

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(-)ve

(+)ve

Maximum

Zero

The artificial satellites are held in orbits by

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Gravitational force

Electric force

Magnetic force

All of these

The relation between the speed and hoop can be written as

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2

4

1/2

1/4

If a body revolves under centripetal force its angular acceleration is

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Non zero

Variable

Increasing

Zero

In rotational motion the analogous of mass is

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Angular acceleration

Torque

Moment of inertia

Angular momentum

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

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Torque

Linear momentum

Angular momentum

Force

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

Time rate of change of angular displacement is called

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Linear velocity

Angular velocity

Rotational velocity

Vibrational velocity

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

If a rocket is accelerating upward with an acceleration of 2 g, an astronaut of weight, mg in the rocket shows apparent weight.

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Zero

Mg

2 mg

3 mg

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Physics Fsc Part 1 Chapter 5 Online Test MCQs With Answers

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