ECAT Pre General Science Physics Chapter 5 Circular Motion Online Test
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Question # 1
Direction of motion ______ in circular motion:
Question # 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
Question # 3
Centripetal acceleration is also called ________ acceleration
Question # 4
Direction of angular momentum is determined by:
Question # 5
When a body moves with a constant speed in a circle:
Question # 6
When angular acceleration is positive, the body rotates:
Question # 7
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:
Question # 8
When an object moves with a uniform angular velocity, then its instantaneous angular velocity is equal to:
Question # 9
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:
Question # 10
A rotating body tends to be slower, when its angular acceleration is:
Question # 11
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 # 12
Direction of motion _______ in circular motion
Question # 13
Moment of inertia depends upon:
Question # 14
The angular speed of a particle moving along a circular path is 5 Pie rad sec-1, Its period of motion is:
Question # 15
Centripetal acceleration is also called ______ acceleration
Question # 16
Direction of motion_______ in circular of motion:
Question # 17
When a body moves along a circular path with constant speed, it has an acceleration, which is always directed
Question # 18
A rotating wheel accelerates up to the value of 0.75 rev/sec2after 2 seconds of its start. Its angular velocity becomes:
Question # 19
Centripetal force performs:
Question # 20
A flywheel accelerates from rest to an angular velocity of 7 rad/sec in 7 seconds. Its average acceleration will be:
Question # 21
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 # 22
One radian is:
Question # 23
One radian is
Question # 24
The center of mass of a sphere lies at:
Question # 25
A body can have constant velocity when it follows:
Question # 26
The useful unit of angular replacement in SI unit is:
Question # 27
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:
Question # 28
One radian is equal to:
Question # 29
INTELSAT operates at frequencies 4, 6, 11, 14 having unit of
Question # 30
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:
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