Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 362 · 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 560 N when you push with 140 N. What is its mechanical advantage (MA)?
2. 2.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
3. 3.🏋️ Pushing a crate 10 m took 3800 J of work. What force was used, in newtons?
4. 4.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
5. 5.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) yes, by half (d) only on Mondays
7. 7.🏋️ Pushing a crate 10 m took 2200 J of work. What force was used, in newtons?
8. 8.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
9. 9.🏋️ Pushing a crate 9 m took 1170 J of work. What force was used, in newtons?
10. 10.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 3900 N box up it, in newtons? (ideal ramp, no friction)
11. 11.🏋️ A force of 310 N pushes a cart 1 m along the floor. How much work is done, in joules?
12. 12.🏋️ A 12 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏋️ A 7 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
14. 14.🏋️ A force of 270 N pushes a cart 8 m along the floor. How much work is done, in joules?
15. 15.🏋️ A 14 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
17. 17.🏋️ An 18 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
20. 20.🏋️ A force of 200 N pushes a cart 3 m along the floor. How much work is done, in joules?
21. 21.🏋️ A 5 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
22. 22.🏋️ Pushing a crate 10 m took 200 J of work. What force was used, in newtons?
23. 23.🏋️ A 12 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
24. 24.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) without moving it (d) through a distance
25. 25.🏋️ Pushing a crate 6 m took 2760 J of work. What force was used, in newtons?
26. 26.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ A machine lifts a load of 600 N when you push with 150 N. What is its mechanical advantage (MA)?
28. 28.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ Pushing a crate 6 m took 1500 J of work. What force was used, in newtons?
30. 30.🏋️ A force of 490 N pushes a cart 8 m along the floor. How much work is done, in joules?
31. 31.🏋️ A machine lifts a load of 570 N when you push with 190 N. What is its mechanical advantage (MA)?
32. 32.🏋️ In which unit is work measured? (a) joule (J) (b) metre (m) (c) newton (N) (d) watt hour
33. 33.🏋️ A force of 140 N pushes a cart 1 m along the floor. How much work is done, in joules?
34. 34.🏋️ Pushing a crate 6 m took 1920 J of work. What force was used, in newtons?
35. 35.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) less effort (d) the same effort
36. 36.🏋️ A force of 180 N did 540 J of work. How many metres did the object move?
37. 37.🏋️ Pushing a crate 1 m took 100 J of work. What force was used, in newtons?
38. 38.🏋️ A force of 280 N pushes a cart 10 m along the floor. How much work is done, in joules?
39. 39.🏋️ A 12 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
40. 40.🏋️ A force of 460 N did 2300 J of work. How many metres did the object move?

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