What is the efficiency of a pulley if 5000 joules of energy results in 3000 joules of work? Please show your calculations
The efficiency of a pulley is given by the formula:
Efficiency = (Useful Output Energy / Input Energy) * 100
Input Energy = 5000 joules
Useful Output Energy = 3000 joules
Efficiency = (3000 / 5000) * 100
Efficiency = 0.6 * 100
Efficiency = 60%
Therefore, the efficiency of the pulley is 60%.