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Zina [86]
4 years ago
10

A box weighing 100 n is pushed up an incline plane that is 5 m long. It takes a force of 75 n to push it to the top, which has a

height of 3m. Find the efficiency
Physics
1 answer:
SVETLANKA909090 [29]4 years ago
3 0

Answer:

0.8

Explanation:

Work = force × distance

W = Fd

W = 75 N × 5 m

W = 375 J

Potential energy = weight × height

PE = mgh

PE = 100 N × 3 m

PE = 300 J

Efficiency = energy out / energy in

e = 300 J / 375 J

e = 0.8

The efficiency is 0.8, or 80%.

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