let m1= 1kg, m2= 2kg and m3=3kg are arranged in such a way that m1 is hanged by a string at one end of the upper pulley and on the other end another pulley is there where m2 and m3 are suspended by another string.
if the string from the upper pulkey to m1 is 20 cm when the system is released from rest . how long it take before m1,strikes the upper pulley
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hindi language sir please answer me
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