Question # 1

Centripetal acceleration is also called ______ acceleration

Choose an answer

Tangential

Radial

Angular

None of them

Which of the following pairs does not have identical dimensions?

Choose an answer

Torque and energy

Energy and work

Momentum and impulse

Mass and moment of inertia

Conventionally the angular velocity is directed at an angle of

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

A car is moves around a circular track of radius 0.3 m at the rate of 120 rev/min. The speed v of the car is:

Choose an answer

38 m/sec

3.8 m/sec

0.6 m/sec

None of these

The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec^-2comes out to:

Choose an answer

980 N

580 N

1380 N

Zero

Formula for calculating moment of inertia of the bodies of one pair is same. Tick the answer.

Choose an answer

Disc, sphere

sphere, hoop

Thin rod, hoop

Hoop,disc

When a body moves along a circular path with constant speed, it has an acceleration, which is always directed

Choose an answer

Along the tangent

Towards the centre

Away from the centre

None of them

The number of countries who manage the largest satellite system is:

Choose an answer

3

24

126

200

Circular motion is an example of motion in:

Choose an answer

One dimension

Two dimensions

Three dimensions

None of these

Conventionally the angular velocity is directed to an angle of:

Choose an answer

90° to the axis of rotation

30° to the axis of rotation

0° to the axis of rotation

None of the above

The rear wheels of an automobile are rev/sec which is reduced to 38 rad/sec in 5 seconds when brakes are applied. Its angular acceleration is:

Choose an answer

5 rad/sec²

-10 rav/sec²

-10 rad/sec²

-5 rav/sec²

The instantaneous acceleration of a body moving with constant speed in a circle:

Choose an answer

Remains constant

Is called centripetal acceleration

Tangential acceleration

None of these

Centripetal force performs:

Choose an answer

Maximum work

Negative work

Positive work

None of these

A disc rolls down a hill and its speed at bottom is found to be 11.4 m/sec. Height of the hill is then nearly:

Choose an answer

10 m

12 m

13 m

15 m

Direction of angular momentum is determined by:

Choose an answer

Right hand rule

Head to tail rule

Left hand rule

None of them

When angular acceleration is positive, the body rotates:

Choose an answer

Slower

Slowest

Faster

None of these

More Classes

Other Links

Physics ECAT Pre Engineering Chapter 5 Circular Motion Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer