Question # 1

In uniform circular motion, the factor that remains constant is:

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Linear velocity

Acceleration

Speed

All of these

If the radius of the circular path of particle going around the circle is doubled without changing its frequency of rotation, then centripetal force on it is.

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doubled

halved

unchanged

quadrupled

Geo stationary satellite remains

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Stationary

Both "A" & "B"

Appear

None of them

The ratio of angular speeds of minute hand and hour hand of a watch is:

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1: 12

6: 1

12: 1

1: 6

Torque is necessary for producing.

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angular speed

linear acceleration

angular acceleration

none of these

If a car moves with a uniform speed of 2 ms-1 in a circle of radius 0.4m. Its angular speed is

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4 rad. s^-1

1.6 rad. s^-1

5 rad. s^-1

2.8 ms^-1

A car of 1000kg traveling at 20m/sec rounds a curve of radius 100m. Find the necessary centripetal force

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4 x 10³ kg m/s²

3 x 10³ kg m/s²

5 x 10³kg m/s²

4.5 x 10³kg m/s²

A point on the rim of wheel 400 cm in diameter has a velocity of 1600 cms-1 . The angular velocity of the wheel is:

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6 rad/s

4 rad/s

2 rad/s

8 rad/s

A particle revolves round a circular path with a constant speed. The accelerationof the particle is

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A. A long the circumference of the circle

Along the tangent

Along the radius

Zero

A particle is moving with constant speed by keeping itself at constant distance from a fixed point in a given plane. Its motion is

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Circular motion

Uniform circular motion

Uniform circular motion with fixed axis of rotation

Uniform circular motion with axis of rotation not defined

Angular displacement in rotational motion is expressed in

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m

m²

Nms-1

Nm s

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MDCAT Physics Chapter 3 Rotational and circular motion Online Test MCQs With Answers

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