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Grade 12th passIIT JEE Entrance Exam

Plz solve this problem whose diagram and mcq options are in the attached image.
Determine the speed with which block B rises in figure if the end of the cord at A is pulled down with a speed of 2m/s.

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Profile image of yashra singh
6 Years agoGrade 12th pass
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1 Answer

Profile image of Vikas TU
6 Years ago
Hiii Va +2Vb-2Vc =0and Vb + Vc = 0we get Vc = -Vb Substitute this vlue in equation we get Vb = – 0.5 m/s

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