A certain lever system is only 30% efficient. The following changes are considered

Question

change 1: uses stiffer level to reduce energy loss spending over
change 2: make a longer level that require less force watch change would make the lever more efficient

A change two would make deliver more efficient because this would make it easier to lift

B change 2 would make the lever more efficient because less energy would be lost.

C change one would make deliver more efficient because this would make it easier to lift

D change 1 would make the lever more efficient because less energy would be lost.

Answer 1

D change 1 would make the lever more efficient because less energy would be lost.

By using a stiffer lever system, energy loss would be reduced, leading to an overall increase in efficiency.