An engine lifts a body 500 kg weight up to a height of 20 m in 10 sec. Find:
(1) the total work done by the engine.( ans : 10^5 joule)
(2)the power of the engine in Kilowatt.(ans:10 kilowatt)
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An engine lifts a body 500 kg weight up to a height of 20 m in 10 sec. Find:
(1) the total work done by the engine.( ans : 10^5 joule)
(2)the power of the engine in Kilowatt.(ans:10 kilowatt)
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w = mgh
= 500×20×10
= 100000
= 10^5 joule ans
2) the power of the engine in Kilowatt
= P = energy/unit time = mgh/t
= 500×20×10/10
= 10^4 watt
= 10 kilowatt ans
I hope it help you