A block of mass M with a semicircular track of radius R rests on a horizontal frictionless surface. A uniform cylinder of radius r and mass m is released from rest from the top point A. The cylinder slips on the semicircular frictionless track. The distance travelled by the block when the cylinder reaches the point B is :
A
B
C
D
none
Text Solution
Verified by ExpertsThe correct answer is:
B
when cylinder reaches pt B
then block get shifted by x
∴ but since than there is no ext
force therefore com remain at its position
[(R–r) – x]m = Mx ∴ x = 
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