Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 562 · 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.🏋️ Pushing a crate 1 m took 430 J of work. What force was used, in newtons?
2. 2.🏋️ A 14 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
3. 3.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ Pushing a crate 9 m took 270 J of work. What force was used, in newtons?
5. 5.🏋️ A force of 60 N did 180 J of work. How many metres did the object move?
6. 6.🏋️ 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
7. 7.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
8. 8.🏋️ In which unit is work measured? (a) joule (J) (b) newton (N) (c) metre (m) (d) watt hour
9. 9.🏋️ A force of 40 N pushes a cart 10 m along the floor. How much work is done, in joules?
10. 10.🏋️ A force of 250 N did 2000 J of work. How many metres did the object move?
11. 11.🏋️ Pushing a crate 7 m took 2800 J of work. What force was used, in newtons?
12. 12.🏋️ Work is done when a force moves something … (a) very slowly (b) through a distance (c) without moving it (d) only upwards
13. 13.🏋️ A force of 110 N did 550 J of work. How many metres did the object move?
14. 14.🏋️ A machine lifts a load of 240 N when you push with 40 N. What is its mechanical advantage (MA)?
15. 15.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
16. 16.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ A force of 70 N pushes a cart 9 m along the floor. How much work is done, in joules?
18. 18.🏋️ An 11 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
20. 20.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
21. 21.🏋️ A force of 80 N pushes a cart 3 m along the floor. How much work is done, in joules?
22. 22.🏋️ Pushing a crate 1 m took 30 J of work. What force was used, in newtons?
23. 23.🏋️ A 7 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
24. 24.🏋️ A force of 10 N did 10 J of work. How many metres did the object move?
25. 25.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
26. 26.🏋️ A force of 150 N pushes a cart 7 m along the floor. How much work is done, in joules?
27. 27.🏋️ Pushing a crate 7 m took 490 J of work. What force was used, in newtons?
28. 28.🏋️ A force of 150 N pushes a cart 5 m along the floor. How much work is done, in joules?
29. 29.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
30. 30.🏋️ Pushing a crate 1 m took 490 J of work. What force was used, in newtons?
31. 31.🏋️ A force of 40 N did 320 J of work. How many metres did the object move?
32. 32.🏋️ Pushing a crate 2 m took 200 J of work. What force was used, in newtons?
33. 33.🏋️ A force of 50 N pushes a cart 8 m along the floor. How much work is done, in joules?
34. 34.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
35. 35.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) the same effort (d) no effort
36. 36.🏋️ A 4 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏋️ A 6 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.🏋️ 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?
39. 39.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
40. 40.🏋️ A 15 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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