ECAT Pre General Science Physics Chapter 5 Circular Motion

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  • Chapter NameCh 5 - Circular Motion

ECAT Pre General Science Physics Chapter 5 Circular Motion

  • Total Questions30

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ECAT Pre General Science Physics Chapter 5 Circular Motion

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Question # 1

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

Question # 2

Conventionally the angular velocity is directed to an angle of:

Question # 3

The useful unit of angular replacement in SI unit is:

Question # 4

Moment of linear momentum is called.

Question # 5

Einstein's theory about gravity if better than Newton's because it gave explanation of:

Question # 6

Direction of motion_______ in circular of motion:

Question # 7

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

Question # 8

Circular motion is an example of motion in:

Question # 9

Conventional the angular Velocity is Directed at an angle of:

Question # 10

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

Question # 11

Centripetal force performs:

Question # 12

Direction of angular momentum is determined by:

Question # 13

Angular velocity is a:

Question # 14

Which of the following pairs does not have identical dimensions?

Question # 15

The rear wheels of an automobile are rotating with an angular velocity of 14 rev/sec which is reduced to 38 rad/sec in 5 second when brakes are applied. Its angular acceleration is:

Question # 16

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

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

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

Question # 21

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 # 22

Direction of motion ______ in circular motion:

Question # 23

Centripetal acceleration is also called ______ acceleration

Question # 24

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

Question # 25

One radian is:

Question # 26

Direction of motion _______ in circular motion

Question # 27

A point on the rim of a wheel moves 0.2 m where the wheel turns through an angle is 14.3 degrees. The radius of the wheel is:

Question # 28

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 # 29

Radian is defined as the angle subtended at the center of a circle by an arc of:

Question # 30

A 1000 Kg car travelling with a speed of 90 km/hr turns around a curve of radius 0.1 km. The necessary centripetal force comes out to be:

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