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