Ronald pushes a box up an inclined plane with 35% efficiency. If 224 joules of energy went into moving the box, how much energy did Ronald put into the inclined plane?
Ronald put into the inclined plane a total of 641 joules of energy.
To find out how much energy Ronald put into the inclined plane, we need to first calculate the total energy used to push the box up the inclined plane.
Efficiency is defined as the ratio of useful work output to the total work input. In this case, the efficiency is 35%, which can be written as a decimal as 0.35.
Total energy input = Useful work output / Efficiency
Let's calculate the total energy input:
Total energy input = 224 joules / 0.35
Total energy input = 640 joules
Therefore, Ronald put 640 joules of energy into the inclined plane.