InterviewSolution
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InterviewSolution
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2.Acord is used to lower vertically a block of mass M.a distance d at a constant downward acceleration of w/4!The work done by the cord on the block is(b) 3MI(W) Meymage(d) Mg d |
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Answer» Let T be tension in the string Mg−T=Mg4Mg−T=Mg4 T=Mg−Mg4T=Mg−Mg4 =3Mg4=3Mg4 Work done by tension =−T×d=−T×d =−3Mg4=−3Mg4×d×d =−3Mgd4=−3Mgd4 Hence a is the correct answer option (a) is the right answer d ) is the correct answer d is the right answer ( d ) is the correct answer d = ( is the right answer ) |
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