In the system shown in the figure , a bead of mass `m` can slide on the string. There is frictio

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In the system shown in the figure , a bead of mass `m` can slide on the string. There is friction beween the bead and the string. Block `B` has mass equal to twice that of the bead. The system is released from rest with lenth `l=18.75m` of the string hanging below the bead. Assuming the pulley and string to be massless. Find the distance (in meter) moved by the block `B` before the bead slips out of the thread.
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You fool! The bead is sliding there will be no tension

debjitmondal