the ends P and Q of an un-stretchable string move downwards with uniform speed U. Pulleys A and B are fixed. The mass M moves upwards with a speed:

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In the arrangement shown in the figure, the ends P and Q of an un-stretchable string move downwards with uniform speed U. Pulleys A and B are fixed. The mass M moves upwards with a speed:
08
Sep
In the arrangement shown in the figure, the ends P and Q of an un-stretchable string move downwards with uniform speed U. Pulleys A and B are fixed. The mass M moves upwards with a speed: In the arrangement shown in the figure the ends P and Q of an un-stretchable string move downwards with [...]
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Tags: In the arrangement shown in the figure , the ends P and Q of an un-stretchable string move downwards with uniform speed U. Pulleys A and B are fixed. The mass M moves upwards with a speed: ,