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A block of mass m is suspended from a pu...

A block of mass m is suspended from a pulley in form of a circular disc of mass m & radius R. The system is released from rest, find the angular velocity of disc when block has dropped by height h. (there is no slipping between string & pulley)

A

` rsqrt ( ( 3) /( 4 gh ) ) `

B

` ( 1 ) /(r ) sqrt ( (4gh ) /( 3 ) ) `

C

` r sqrt ( ( 3 ) /( 2gh)) `

D

` ( 1 ) /(r ) sqrt ( (2gh)/( 3 )) `

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The correct Answer is:
B
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