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