Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 616 · 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 force of 220 N did 1100 J of work. How many metres did the object move?
2. 2.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) effort ÷ load (d) load + effort
3. 3.🏋️ A 17 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ A 16 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
5. 5.🏋️ A force of 460 N pushes a cart 6 m along the floor. How much work is done, in joules?
6. 6.🏋️ A force of 460 N did 4600 J of work. How many metres did the object move?
7. 7.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1050 N box up it, in newtons? (ideal ramp, no friction)
8. 8.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) yes, always (d) only on Mondays
9. 9.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
10. 10.🏋️ A force of 130 N pushes a cart 2 m along the floor. How much work is done, in joules?
11. 11.🏋️ A force of 170 N pushes a cart 7 m along the floor. How much work is done, in joules?
12. 12.🏋️ A force of 130 N pushes a cart 8 m along the floor. How much work is done, in joules?
13. 13.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
14. 14.🏋️ A 13 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
15. 15.🏋️ Work is done when a force moves something … (a) without moving it (b) very slowly (c) through a distance (d) only upwards
16. 16.🏋️ A 3 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
17. 17.🏋️ A machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
18. 18.🏋️ A force of 160 N pushes a cart 1 m along the floor. How much work is done, in joules?
19. 19.🏋️ Pushing a crate 10 m took 700 J of work. What force was used, in newtons?
20. 20.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) joule (J) (d) watt hour
21. 21.🏋️ A 4 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
22. 22.🏋️ A force of 50 N did 50 J of work. How many metres did the object move?
23. 23.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ Pushing a crate 2 m took 540 J of work. What force was used, in newtons?
25. 25.🏋️ A force of 210 N pushes a cart 1 m along the floor. How much work is done, in joules?
26. 26.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 150 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ A 4 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
28. 28.🏋️ Pushing a crate 1 m took 160 J of work. What force was used, in newtons?
29. 29.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
30. 30.🏋️ A machine lifts a load of 420 N when you push with 140 N. What is its mechanical advantage (MA)?
31. 31.🏋️ A force of 390 N did 1560 J of work. How many metres did the object move?
32. 32.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5700 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ 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?
34. 34.🏋️ A 1 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
35. 35.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
36. 36.🏋️ Pushing a crate 7 m took 560 J of work. What force was used, in newtons?
37. 37.🏋️ A force of 170 N pushes a cart 3 m along the floor. How much work is done, in joules?
38. 38.🏋️ A force of 310 N did 1860 J of work. How many metres did the object move?
39. 39.🏋️ A force of 470 N pushes a cart 2 m along the floor. How much work is done, in joules?
40. 40.🏋️ Pushing a crate 4 m took 800 J of work. What force was used, in newtons?

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