ECAT Pre Computer Science Chapter 5 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 5 Circular Motion

Try The MCQ's Test For ECAT Physics Chapter 5 Circular Motion

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ECAT Physics Chapter 5 Circular Motion

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Question # 1

When a body moves with a constant speed in a circle:

Question # 2

Angular velocity is a:

Question # 3

______ plays the same role during angular motion as played by the mass in linear motion

Question # 4

Centripetal force performs:

Question # 5

One radian is equal to:

Question # 6

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

Question # 7

If a gymnast sitting on a rotating stool with his arms outstretched, brings his arms towards the chest, then its angular velocity will

Question # 8

Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.

Question # 9

Conventionally the angular velocity is directed at an angle of

Question # 10

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

Question # 11

In case of planets, the necessary acceleration is provided by:

Question # 12

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

Question # 13

A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:

Question # 14

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

Question # 15

One radian is equal to:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 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:
A. 5 rad/sec2
B. -10 rav/sec2
C. -10 rad/sec2
D. -5 rav/sec2
2 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 9.8 m sec-2comes out to be
A. 980 N
B. 580 N
C. 1380 N
D. Zero
3 A car is turning around a corner at 10 m/sec as it travels along an arc of a circle. If value of centripetal acceleration is 10 m/sec2in this case, find radius of the circular path:
A. 1 m
B. 5 m
C. 10 m
D. 15 m
4 When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
A. Zero
B. Its average velocity
C. Its angular displacement
D. None of these
5 The useful unit of angular replacement in SI unit is:
A. Degree
B. Revolution
C. Radian
D. Metre
6 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
7 The number of countries who manage the largest satellite system is:
A. 3
B. 24
C. 126
D. 200
8 Conventionally the angular velocity is directed at an angle of
A. 90° to the axis of rotation
B. 30° to the axis of rotation
C. 0° to the axis of rotation
D. None of the above
9 One radian is equal to:
A. 30.3°
B. 45.3°
C. 50.3°
D. 57.3°
10 Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
A. Greater than
B. smaller than
C. Equal to
D. None of these

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