A team of students builds a lever as a science project. They expend 10,300 Joules of energy to lift some bricks with the lever. If 6,283 Joules of energy are applied to the bricks, what is the lever’s efficiency?(1 point)
Responses
0.61%
0.61%
61%
61%
39%
39%
164%
61%
To find the efficiency of the lever, we use the formula:
Efficiency = (output energy / input energy) * 100
In this case, the input energy is 10,300 Joules (expended by the students) and the output energy is 6,283 Joules (applied to the bricks).
Plugging in the values into the formula:
Efficiency = (6,283 / 10,300) * 100
Efficiency = 0.61 * 100
Efficiency = 61%
Therefore, the lever's efficiency is 61%.