Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 353 · 40 questions

Engineer's tip (Less force, more distance): MA = load ÷ effort. Work (J) = force (N) × distance (m); force = work ÷ distance; distance = work ÷ force. Ideal ramp: MA = length ÷ height, effort = load ÷ MA.

1. 1.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
2. 2.🏋️ Pushing a crate 2 m took 100 J of work. What force was used, in newtons?
3. 3.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ A force of 400 N did 800 J of work. How many metres did the object move?
5. 5.🏋️ A force of 270 N did 1080 J of work. How many metres did the object move?
6. 6.🏋️ A force of 60 N pushes a cart 3 m along the floor. How much work is done, in joules?
7. 7.🏋️ Pushing a crate 2 m took 400 J of work. What force was used, in newtons?
8. 8.🏋️ A force of 330 N pushes a cart 4 m along the floor. How much work is done, in joules?
9. 9.🏋️ Pushing a crate 9 m took 1890 J of work. What force was used, in newtons?
10. 10.🏋️ A force of 310 N pushes a cart 3 m along the floor. How much work is done, in joules?
11. 11.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
12. 12.🏋️ A machine lifts a load of 250 N when you push with 50 N. What is its mechanical advantage (MA)?
13. 13.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 150 N box up it, in newtons? (ideal ramp, no friction)
14. 14.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) newton (N) (d) watt hour
15. 15.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
16. 16.🏋️ Pushing a crate 3 m took 480 J of work. What force was used, in newtons?
17. 17.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4750 N box up it, in newtons? (ideal ramp, no friction)
18. 18.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) effort ÷ load (d) load + effort
19. 19.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
20. 20.🏋️ A force of 20 N did 40 J of work. How many metres did the object move?
21. 21.🏋️ A force of 20 N pushes a cart 7 m along the floor. How much work is done, in joules?
22. 22.🏋️ A machine lifts a load of 80 N when you push with 20 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A force of 40 N pushes a cart 5 m along the floor. How much work is done, in joules?
24. 24.🏋️ A force of 420 N pushes a cart 3 m along the floor. How much work is done, in joules?
25. 25.🏋️ Pushing a crate 2 m took 160 J of work. What force was used, in newtons?
26. 26.🏋️ A 14 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
27. 27.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
28. 28.🏋️ An 11 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
29. 29.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) very slowly (d) only upwards
30. 30.🏋️ A force of 500 N pushes a cart 4 m along the floor. How much work is done, in joules?
31. 31.🏋️ A force of 460 N pushes a cart 5 m along the floor. How much work is done, in joules?
32. 32.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) more effort (d) less effort
33. 33.🏋️ Pushing a crate 8 m took 1680 J of work. What force was used, in newtons?
34. 34.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
35. 35.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.🏋️ Pushing a crate 7 m took 2030 J of work. What force was used, in newtons?
37. 37.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ A 13 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🏋️ A force of 360 N pushes a cart 2 m along the floor. How much work is done, in joules?
40. 40.🏋️ An 8 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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