ECAT Physics Chapter 5 Circular Motion Online Test
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Question # 1
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 # 2
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:
Question # 3
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 # 4
The instantaneous acceleration of a body moving with constant speed in a circle:
Question # 5
Which one is related to angular motion:
Question # 6
The number of countries who manage the largest satellite system is:
Question # 7
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 # 8
The useful unit of the angular displacement in SI unit is:
Question # 9
A body can have constant velocity when it follows:
Question # 10
Centripetal acceleration is also called ______ acceleration:
Question # 11
One radian is:
Question # 12
Final velocity of a hoop is __________ the final velocity of a disc having same mass and radius on coming down an inclined plane.
Question # 13
When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
Question # 14
A point on the rim of a wheel moves 0.2 m when the wheel turns through an angle of 14.3 degrees. The radius of the wheel is:
Question # 15
A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
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