Bill used a first-class lever to lift a heavy boulder that had a mass of 20 kg. He pushed down on one end of the lever with 40 N force. This end of the lever went down 0.6 m. This resulted in the boulder lifting 0.1 m. Calculate the efficiency of the lever.

Answer 1

Bill used a first class lever to lift a heavy boulder that had a mass of 20 kg. He
pushed down on one end of the lever with 40 N of force. This end of the lever when down 0.6 m. This resulted in the boulder lifting 0.1 m. Calculate the efficiency of the lever.

Answer 2

20kg 40 kg 0.m

Answer 3

I'm sorry but I am having difficulty understanding the values you have provided. Can you please provide more information or clarify your question?