In the arrangement shown in Fig the ends P and Q of an unstrechable string move downwards with uniform speed U pulley A and B are fixed Mass M moves upward with a speed

In the arrangement shown in Fig the ends P and Q of an unstrechable st

1.	In the arrangement shown in Fig the ends P and Q of an unstrechable string move downwards with uniform speed U pulley A and B are fixed Mass M moves upward with a speed
Answer» `2U cos THETA` `U//cos theta` `2U//cos theta` `U cos theta` Solution :Let the velocity of the block M be V upward , then `v cos theta = U RARR v = U cos theta`