A block of mass M is kept on a platform which is accelerating upward with a constant acceleration a. During the time interval T,
(i) The word done by gravity is ................
(ii) The work done by normal reaction is .........
(iii) The change in kinetic energy of the block is ..........
Text Solution
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(i) –1/2 Mg aT 2
(ii) 1/2 M (g + a) aT 2
(iii) 1/2 M a 2 T 2
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