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?(1 point)

Question

Responses

189 joules
189 joules

78.4 joules
78.4 joules

640 joules
640 joules

145.6 joules

Answer 1

To find the amount of energy Ronald put into the inclined plane, we can use the formula:

Efficiency = Energy output / Energy input

Given that the efficiency is 35% and the energy input is 224 joules, we can rearrange the formula to solve for the energy output.

35% = Energy output / 224 joules

To find the energy output, we can cross multiply:

0.35 * 224 joules = Energy output

So, the energy output is 78.4 joules.

Therefore, Ronald put 78.4 joules of energy into the inclined plane.