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2 years ago

9

a load of 400 Newton is lifted by a first class lever in which the load is at the distance of 20 cm and the effort is at the dis

tance of 60 cm from the fulcrum if 150 Newton effort is required to lift the load what is its efficiency ?

1 answer:

Len [333]2 years ago

7 0

Answer:

solution,
Given
load =400N
ld=0.2m
ed=0.6m
effort =150N

Explanation:

efficiency =output work/input work ×100%

l×ld/e×ed×100%

400×0.2/150×0.6×100%

80/90×100%

88.89%ans

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