Answer:
Given, \[m=60\,\,kgh=10\,m\] \[t=40\,s\] \[g=9.8\,\,m/{{s}^{2}}P=?\] We know, \[P=\frac{mgh}{t}=\frac{60\times 9.8\times 10}{40}=147W\]
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