Part A: What is the efficiency of a simple machine if it puts out 400J of energy for every 1320J done on the machine? Leave your answer as a percentage and round to the nearest tenth.
Part B: Choose ONE of the simple machines listed below and tell me in 1-2 sentences how you would improve the efficiency of that machine? You should include the answer from Part A in your response here because the efficiency in Part A is the efficiency of the machine you picked. You don't need to tell me about all of them; choose the one that your are most knowledgeable about.
Choose on of:
1. Pulley
2. Inclined plane
3. Lever
Part A: The efficiency of the simple machine is calculated by dividing the useful output energy (400J) by the total input energy (1320J) and then multiplying by 100 to get the efficiency as a percentage.
Efficiency = (400J / 1320J) * 100 = 30.3%
Part B: I will choose the lever as the simple machine and suggest improving its efficiency by using a longer lever arm to increase the leverage and force applied, thus reducing the input energy needed to achieve the desired output. By increasing the length of the lever arm, the mechanical advantage of the lever will increase, making it easier to lift heavy objects with less effort. This adjustment would help maximize the efficiency of the lever.