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

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

Question # 2

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

Question # 3

Moment of linear momentum is called.

Question # 4

A stone is tied to the end of a 20 cm along string is whirled in a horizontal circle.
if centripetal acceleration is 9.8 m/sec2, then its angular velocity in rad/sec is:

Question # 5

Centripetal acceleration is also called ______ acceleration

Question # 6

A body moving along the circumference of a circle of radius R completes one revolution. The radius of a covered path to the angle subtended at the centre is:

Question # 7

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

Question # 8

Direction of motion _______ in circular motion

Question # 9

One radian is:

Question # 10

When angular acceleration is positive, the body rotates:

Question # 11

Centripetal force performs:

Question # 12

Conventionally the angular velocity is directed at an angle of

Question # 13

Centripetal acceleration is also called _______ acceleration:

Question # 14

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

Question # 15

Angular velocity is a:

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ECAT Physics Chapter 5 Important MCQ's

Sr.# Question Answer
1 Conventional 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 above
2 A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
A. 49 rad/sec2
B. 1 rad/sec2
C. 0.16 rev/sec2
D. Both A and C
3 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to one degree
D. None of them
4 In rotational motion, analogue of force F us called:
A. Couple
B. Torque
C. Mass
D. Moment of intertia
5 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
6 One radian is:
A. Greater than one degree
B. Less than one degree
C. Equal to degree
D. none of these
7 The net force acting on a 100 kg man standing in an elevator accelerating downward with a = 0.8 m sec-2comes out to:
A. 980 N
B. 580 N
C. 1380 N
D. Zero
8 Moment of linear momentum is called.
A. Moment arm
B. Moment of inertia
C. Inertia
D. Angular momentum
9 When a body is moves along a circular path with constant speed, it has an acceleration, which is always directed:
A. Along the tangent
B. Toward the centre
C. Away from the centre
D. None of them
10 Direction of motion _________ in circular motion
A. Changes off and on
B. Changes continously
C. Does not change
D. None of them

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