A) \[635\,\,W\]
B) \[735\,\,W\]
C) \[835\,\,W\]
D) \[1135\,\,W\]
Correct Answer: B
Solution :
Work done by lift = change in PE of weight \[=mgh\] \[=750\times 9.8\times 15=11025\,\,J\] So power of crane \[=\frac{Energy\,used}{time}\] \[=\frac{11025}{15}=735\,W\]You need to login to perform this action.
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