Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 60 · 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 160 J of work. What force was used, in newtons?
2. 2.🏋️ Pushing a crate 8 m took 880 J of work. What force was used, in newtons?
3. 3.🏋️ Pushing a crate 7 m took 2030 J of work. What force was used, in newtons?
4. 4.🏋️ 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?
5. 5.🏋️ 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?
6. 6.🏋️ A force of 150 N pushes a cart 8 m along the floor. How much work is done, in joules?
7. 7.🏋️ A 4 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.🏋️ 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?
9. 9.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) only on Mondays (d) yes, always
10. 10.🏋️ Pushing a crate 9 m took 2790 J of work. What force was used, in newtons?
11. 11.🏋️ A force of 350 N pushes a cart 8 m along the floor. How much work is done, in joules?
12. 12.🏋️ A force of 120 N did 960 J of work. How many metres did the object move?
13. 13.🏋️ Pushing a crate 7 m took 2170 J of work. What force was used, in newtons?
14. 14.🏋️ Pushing a crate 4 m took 40 J of work. What force was used, in newtons?
15. 15.🏋️ A force of 80 N pushes a cart 9 m along the floor. How much work is done, in joules?
16. 16.🏋️ Pushing a crate 6 m took 1620 J of work. What force was used, in newtons?
17. 17.🏋️ A force of 420 N pushes a cart 5 m along the floor. How much work is done, in joules?
18. 18.🏋️ Pushing a crate 2 m took 800 J of work. What force was used, in newtons?
19. 19.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
20. 20.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
21. 21.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
22. 22.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1050 N box up it, in newtons? (ideal ramp, no friction)
23. 23.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
24. 24.🏋️ Pushing a crate 1 m took 140 J of work. What force was used, in newtons?
25. 25.🏋️ A force of 340 N pushes a cart 7 m along the floor. How much work is done, in joules?
26. 26.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
27. 27.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) joule (J) (d) newton (N)
28. 28.🏋️ A force of 470 N did 1880 J of work. How many metres did the object move?
29. 29.🏋️ A force of 250 N pushes a cart 6 m along the floor. How much work is done, in joules?
30. 30.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 3400 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ A force of 440 N pushes a cart 10 m along the floor. How much work is done, in joules?
32. 32.🏋️ A 5 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
33. 33.🏋️ Pushing a crate 5 m took 2500 J of work. What force was used, in newtons?
34. 34.🏋️ A force of 70 N pushes a cart 8 m along the floor. How much work is done, in joules?
35. 35.🏋️ Pushing a crate 10 m took 2500 J of work. What force was used, in newtons?
36. 36.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) less effort (d) no effort
39. 39.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
40. 40.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)

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