In the arrangement shown in the figure, the ends P and Q of an inextensible string move downwards with uniform speed u. Pulleys A and B are fixed. What is the speed

In the arrangement shown in the figure, the ends P and Q of an inextensible string move downwards with uniform speed u. Pulleys A and B are fixed. What is the speed with which mass M moves up?A. 2 u cosθB. u cosθ2 u /cosθD. u/cosθ
In the arrangement shown in the figure- the ends P and Q of an inextensible string move downwards with uniform speed u- Pulleys A and B are fixed- What is the speed with which mass M moves up-A- 2 u cos-B- u cos-2 u -cos-D- u-cos

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In the arrangement shown in figure (3-Q3), the ends P and Q of an