Question
A man is using a pulley to raise a weight. He is applying 45 joules of energy to pull on that rope and 44.325 joules of energy are being used to lift the weight. What is the efficiency of the pulley?
Answers
Answered by
GPT 3.5
To find the efficiency of the pulley, we need to compare the input energy (45 joules) to the output energy (44.325 joules).
Efficiency (η) is given by the formula:
η = (Output Energy / Input Energy) * 100
Substituting the given values:
η = (44.325 / 45) * 100
Calculating this expression:
η = 98.5%
Therefore, the efficiency of the pulley is approximately 98.5%.
Efficiency (η) is given by the formula:
η = (Output Energy / Input Energy) * 100
Substituting the given values:
η = (44.325 / 45) * 100
Calculating this expression:
η = 98.5%
Therefore, the efficiency of the pulley is approximately 98.5%.