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sattari [20]
3 years ago
13

A pulley system is used to lift a 2,000 newton engine up a distance of 3 meters. The operator must apply a force of 250 newtons

to the chain of the pulley system to lift the motor. To lift the engine 3 meters, the operator must pull a total of 30 meters of chain through the pulley system. What is the value of do?
Physics
1 answer:
Nutka1998 [239]3 years ago
3 0

Answer:

The efficiency of the system is 80%.

Explanation:

Given that,

Output force = 2000 N

Distance = 3 m

Input force = 250 N

Distance = 30 m

Suppose we need to find the efficiency of the system

We need to calculate the efficiency of the system

Using formula of efficiency

\eta=\dfrac{W_{o}}{W_{i}}=\dfrac{F_{o}\times d}{F_{i}\times d}

Put the value into the formula

\eta=\dfrac{2000\times3}{250\times30}

\eta=\dfrac{6000}{7500}

\eta=0.8

\eta=0.8\times100

\eta=80\%

Hence, The efficiency of the system is 80%.

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