1.

The ring R in the arrangement shown can slide along a smooth, fixed, horizontal rod XY. It is attached to the block B by a light string. The block is released from rest, with the string horizontal

Answer»

One point in the STRING will have only vertical MOTION
R and B will have momenta of the same magnitude.
When the string becomes vetical , the speed of R and B Will be directly propertionaly to their masses
R will LOSE CONSTANT with the rod at some point

Answer :A


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