Question

In the arrangement shown in the figure (attachment), the ends P and Q of an unstretchable string move downwards with uniform speed U. Pulleys A and B are fixed. mmMass M moves upward with a speed of

(a) 2Ucos(theta)
(b) U/cos(theta)
(c) 2U/cos(theta)
(d) Ucos(theta)

Answer 1

Answer:

u/cos theta

Explanation:

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Answer 2

Answer:

(2) u/cos theta

Explanation:

v cos theta = u

=> v=u/cos theta