CBSE Class 11-science Answered
QUESTION IS ATTACHED
Asked by mahesh_udr2000 | 30 Aug, 2017, 03:11: PM
Expert Answer
1) The velocity of the block after time 't' is v = 0 + at = at.
2) The FBD of the system is
3) Equation of motion for the block is
F - f = ma
F = ma + f = ma + μmg = m(a + μg)
4) Hence, the power delivered is P = Fv = m(a + μg)at. Correct answer is option D.
Answered by Romal Bhansali | 31 Aug, 2017, 12:53: PM
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