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System is shown in the figure and man is pulling the rope from both sides with constant speed `u` find the speed of the block.A. `(3u)/(4)`B. `(3u)/(2)`C. `(u)/(4)`D. none of these |
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Answer» Correct Answer - A `u=(0+v_(1))/(2),(v_(1)+v_(2))/(2)=v,(-v_(2)+u)/(2)=v` Hence `v=` velocity of `M=(3u)/(4)`. |
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