Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 971 · 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 smooth ramp is 6 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🏋️ A machine lifts a load of 600 N when you push with 120 N. What is its mechanical advantage (MA)?
3. 3.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
5. 5.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
6. 6.🏋️ Pushing a crate 6 m took 3000 J of work. What force was used, in newtons?
7. 7.🏋️ A 3 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
8. 8.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) through a distance (d) without moving it
9. 9.🏋️ Pushing a crate 10 m took 2200 J of work. What force was used, in newtons?
10. 10.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) no, work stays the same (d) only on Mondays
11. 11.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) effort ÷ load (d) load ÷ effort
12. 12.🏋️ 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?
13. 13.🏋️ A force of 200 N did 800 J of work. How many metres did the object move?
14. 14.🏋️ An 8 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.🏋️ A force of 440 N did 1760 J of work. How many metres did the object move?
16. 16.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ Pushing a crate 5 m took 800 J of work. What force was used, in newtons?
18. 18.🏋️ A force of 470 N pushes a cart 5 m along the floor. How much work is done, in joules?
19. 19.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
20. 20.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
21. 21.🏋️ 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?
22. 22.🏋️ A force of 330 N pushes a cart 7 m along the floor. How much work is done, in joules?
23. 23.🏋️ A force of 440 N did 3080 J of work. How many metres did the object move?
24. 24.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
25. 25.🏋️ 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?
26. 26.🏋️ A force of 350 N did 1750 J of work. How many metres did the object move?
27. 27.🏋️ A force of 290 N did 2900 J of work. How many metres did the object move?
28. 28.🏋️ A 20 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
29. 29.🏋️ A force of 470 N did 2820 J of work. How many metres did the object move?
30. 30.🏋️ 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?
31. 31.🏋️ Pushing a crate 6 m took 300 J of work. What force was used, in newtons?
32. 32.🏋️ A force of 330 N did 1980 J of work. How many metres did the object move?
33. 33.🏋️ A 10 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ A force of 180 N did 360 J of work. How many metres did the object move?
35. 35.🏋️ A force of 300 N did 1500 J of work. How many metres did the object move?
36. 36.🏋️ A machine lifts a load of 120 N when you push with 20 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A force of 50 N pushes a cart 6 m along the floor. How much work is done, in joules?
38. 38.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2800 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A force of 290 N did 290 J of work. How many metres did the object move?
40. 40.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)

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