In the arrangement shown in the Fig, the ends P and Q of an unstretchable string move downwards with uniform speed U. Pulleys A and B are fixed. Mass M moves upwards with a speed
(a) 2Ucos 0 (b) U/ cos 0 (c) 2U/ cos 0 (d) U cos 0​

In the arrangement shown in the Fig the ends P and Q of an unstretchable string move downwards with uniform speed U Pulleys A and B are fixed Mass M moves upwar class=