Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 140 · 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 260 N pushes a cart 1 m along the floor. How much work is done, in joules?
2. 2.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
3. 3.🏋️ A force of 330 N did 2970 J of work. How many metres did the object move?
4. 4.🏋️ Pushing a crate 9 m took 2700 J of work. What force was used, in newtons?
5. 5.🏋️ Pushing a crate 3 m took 1350 J of work. What force was used, in newtons?
6. 6.🏋️ A force of 130 N did 260 J of work. How many metres did the object move?
7. 7.🏋️ A 20 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
8. 8.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) joule (J) (d) metre (m)
9. 9.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) load × effort (d) effort ÷ load
10. 10.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, always (d) yes, by half
11. 11.🏋️ A force of 40 N did 320 J of work. How many metres did the object move?
12. 12.🏋️ Pushing a crate 4 m took 560 J of work. What force was used, in newtons?
13. 13.🏋️ A longer ramp to the same height needs … (a) no effort (b) more effort (c) the same effort (d) less effort
14. 14.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
15. 15.🏋️ A force of 110 N pushes a cart 8 m along the floor. How much work is done, in joules?
16. 16.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
18. 18.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
19. 19.🏋️ A force of 380 N pushes a cart 3 m along the floor. How much work is done, in joules?
20. 20.🏋️ A machine lifts a load of 480 N when you push with 80 N. What is its mechanical advantage (MA)?
21. 21.🏋️ A force of 240 N pushes a cart 1 m along the floor. How much work is done, in joules?
22. 22.🏋️ A force of 170 N pushes a cart 6 m along the floor. How much work is done, in joules?
23. 23.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A force of 40 N pushes a cart 3 m along the floor. How much work is done, in joules?
25. 25.🏋️ A force of 320 N did 1920 J of work. How many metres did the object move?
26. 26.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) very slowly (d) only upwards
27. 27.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
28. 28.🏋️ A force of 300 N did 900 J of work. How many metres did the object move?
29. 29.🏋️ A force of 470 N pushes a cart 5 m along the floor. How much work is done, in joules?
30. 30.🏋️ Pushing a crate 1 m took 280 J of work. What force was used, in newtons?
31. 31.🏋️ A 19 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
32. 32.🏋️ A force of 470 N pushes a cart 4 m along the floor. How much work is done, in joules?
33. 33.🏋️ A force of 330 N pushes a cart 1 m along the floor. How much work is done, in joules?
34. 34.🏋️ Pushing a crate 5 m took 600 J of work. What force was used, in newtons?
35. 35.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 250 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ A force of 100 N pushes a cart 6 m along the floor. How much work is done, in joules?
38. 38.🏋️ An 8 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
40. 40.🏋️ A 13 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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