Question

question #1 a student measures the work output of a machine to be 125 joules and the work input to be 150 joules. explain what could be wrong with the students measurements. no machine has an efficiency of 100%. the work input must be less than the work output no machine has an efficiency of 100%. the work output must be greater than the work input there is nothing wrong with the students observation, work input is always greater than work output all machines should have an efficiency of 100%. work output should equal work input question #2 is the measure of how much work that was put into the machine is changed into work output by the machine friction ideal machine efficiency saved mechanical advantage

Explanation:

For Question #1, in real - world machines, due to factors like friction, no machine has 100% efficiency. Work input is always greater than work output. For Question #2, efficiency is defined as the ratio of work output to work input, which measures how much of the input work is converted to output work.

Answer:

Question #1: There is nothing wrong with the student’s observation, work input is always greater than work output.
Question #2: Efficiency