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. `(1)/(R )sqrt((4gh)/(3))`
B. `(1)/(R )sqrt((2gh)/(3))`
C. `R sqrt((2gh)/(3))`
D. `R sqrt((4gh)/(3))`
