Efficiency is defined as the ratio of useful output energy (work) to the input energy. Mathematically, it can be calculated using the formula:
Efficiency = (Useful output energy / Input energy) * 100%
In this case, the useful output energy (work) is given as 3000 joules, and the input energy is given as 5000 joules. Plugging these values into the formula, we get:
Efficiency = (3000 joules / 5000 joules) * 100%
= 0.6 * 100%
= 60%
Therefore, the efficiency of the pulley is 60%.
What is the efficiency of a pulley if 5000 joules of energy results in 3000 joules of work? Please show your calculations.
1 answer
1 answer