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Question

A turn table is rotating about the fixed vertical axis. A particle of mass m is lying on a table at rest with respect to the table. An observer is standing over a block of mass M moving with an acceleration a. Find the magnitude of pseudo-force on a particle of mass m as observed by the observer. (Given a body is subjected to an acceleration called centripetal acceleration directed towards the centre when it is rotating and is equal to rω2 )


Your Answer
A
m(arω2)
Your Answer
B
Ma
Your Answer
C
m(a+rω2)
Correct Answer
D
ma

Solution

The correct option is B ma
Using the concept of pseudo force in the frame of observer standing over the block, we have
acceleartion of the body of mass m is a
Pseudo force Fs=mbodyaframe of reference=ma^i
Hence magnitude, Fs=ma

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