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Question

An object placed with a rotating platform moves away from the centre due to

A
centripetal force
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B
centrifugal force
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C
wheel and axle
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D
screw jack
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Solution

The correct option is B centrifugal force
An object placed on a rotating platform is a case of non-inertial frame of reference. To describe its motion using Newton's Laws we need to add fictitious forces in the system. In the frame of reference of the object, a fictitious force, centrifugal force acts on the object which acts in the outwards radial direction. Therefore, the object placed on a rotating platform move away from the centre due to centrifugal force.

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