Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 823 · 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 400 N when you push with 200 N. What is its mechanical advantage (MA)?
2. 2.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) newton (N) (d) metre (m)
3. 3.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
4. 4.🏋️ A force of 340 N pushes a cart 5 m along the floor. How much work is done, in joules?
5. 5.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) no, work stays the same (d) yes, by half
6. 6.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
7. 7.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) no effort (d) more effort
8. 8.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
9. 9.🏋️ A force of 80 N pushes a cart 8 m along the floor. How much work is done, in joules?
10. 10.🏋️ 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)
11. 11.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
12. 12.🏋️ Pushing a crate 7 m took 2170 J of work. What force was used, in newtons?
13. 13.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
14. 14.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) effort ÷ load (d) load × effort
15. 15.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3750 N box up it, in newtons? (ideal ramp, no friction)
16. 16.🏋️ A force of 80 N pushes a cart 2 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 260 N did 260 J of work. How many metres did the object move?
18. 18.🏋️ Pushing a crate 1 m took 460 J of work. What force was used, in newtons?
19. 19.🏋️ A force of 50 N pushes a cart 10 m along the floor. How much work is done, in joules?
20. 20.🏋️ A machine lifts a load of 280 N when you push with 140 N. What is its mechanical advantage (MA)?
21. 21.🏋️ Pushing a crate 2 m took 260 J of work. What force was used, in newtons?
22. 22.🏋️ 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?
23. 23.🏋️ A force of 200 N pushes a cart 8 m along the floor. How much work is done, in joules?
24. 24.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
25. 25.🏋️ A force of 80 N did 240 J of work. How many metres did the object move?
26. 26.🏋️ A machine lifts a load of 240 N when you push with 40 N. What is its mechanical advantage (MA)?
27. 27.🏋️ Pushing a crate 3 m took 570 J of work. What force was used, in newtons?
28. 28.🏋️ A force of 100 N pushes a cart 1 m along the floor. How much work is done, in joules?
29. 29.🏋️ Pushing a crate 7 m took 2660 J of work. What force was used, in newtons?
30. 30.🏋️ A 20 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.🏋️ A 5 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
32. 32.🏋️ Pushing a crate 6 m took 1320 J of work. What force was used, in newtons?
33. 33.🏋️ A force of 140 N did 420 J of work. How many metres did the object move?
34. 34.🏋️ A force of 120 N did 360 J of work. How many metres did the object move?
35. 35.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ A 15 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.🏋️ Pushing a crate 4 m took 1920 J of work. What force was used, in newtons?
38. 38.🏋️ Pushing a crate 8 m took 3600 J of work. What force was used, in newtons?
39. 39.🏋️ A force of 110 N did 550 J of work. How many metres did the object move?
40. 40.🏋️ Pushing a crate 8 m took 1360 J of work. What force was used, in newtons?

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