A) 10 W
B) 20 W
C) 30 W
D) 40 W
Correct Answer: D
Solution :
[d] \[\operatorname{m}=10\times 0.8kg = 8kg\] Height of iron chain \[=5m\] \[\operatorname{P}=\frac{mgh}{t}=\frac{8\times 10\times 5}{10}W=40w\]You need to login to perform this action.
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