A body of mass 72 kg is lifted by 15 m with an acceleration of g/10 by an ideal string. If work done by tension in string is W 1 , magnitude of work done by gravitational force is W 2 , kinetic energy when it has lifted in K and speed of mass when it has lifted is v then: (data in column is given in SI units) (g = 10 m/s 2 )
Column I | Column II |
(i) W1 | [A] 10800 |
(ii) W2 | [B] 1080 |
(iii) K | [C] 11880 |
(iv) v | [D] 5.47 |
Text Solution
Verified by ExpertsThe correct answer is:
CHECK THE SOLUTION.
Ans.
(i) [C]
(ii) [A]
(iii) [B]
(iv) [D]
Sol. (i) 11880
(ii) 10800
(iii) 1080
(iv) 5.47
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