1) Did your measurements agree with your predictions or did they point to different predictions?If the answer did not agree with your predictions then explain why ?

2)How does a ramp (inclined plane) make a job easier? Explain how.

3) Does it require more or less force to lift the cart using the ramp? How do you know (hint: use your data table) Justify your answer

4) Is more or less work done in lifting the cart using the ramp? Justify your answer

5) How does the ideal compare (less/more/equal)with the actual mechanical advantage? Justify your answer

6) What force causes a difference between the ideal and actual mechanical advantage?Explain

7) How could this force be reduced?

8) Which is easier (requires less force): using a short95 textbooks), inclined plane or using a long not-so-steep(3 textbooks) inclined plane?

9) Which requires less work: using a short ( 5 textbooks), inclined plane or using a long not-so-steep inclined plane(3 textbooks)?

Ramp (30 cm height) Ramp (45 cm height) Height .3 m .45 m Length LM IM Weight of cart 2 N 2 N Effort force 1.2 N 1. 4 Work (no ramp) = Work Out 0. 6 J 2:045 = 0.9 5 IMA 3.3 2.2 AMA Work In 1. 2 7 1. 4. 1 = 1.47 Efficiency 50 64. 3%