Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 526 · 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 force of 50 N did 100 J of work. How many metres did the object move?
2. 2.🏋️ A force of 150 N pushes a cart 5 m along the floor. How much work is done, in joules?
3. 3.🏋️ A 19 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ 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?
5. 5.🏋️ A force of 30 N pushes a cart 2 m along the floor. How much work is done, in joules?
6. 6.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) effort ÷ load (d) load ÷ effort
7. 7.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) only on Mondays (d) yes, by half
8. 8.🏋️ A force of 340 N pushes a cart 8 m along the floor. How much work is done, in joules?
9. 9.🏋️ A force of 140 N pushes a cart 7 m along the floor. How much work is done, in joules?
10. 10.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
11. 11.🏋️ Pushing a crate 6 m took 1500 J of work. What force was used, in newtons?
12. 12.🏋️ 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)
13. 13.🏋️ A machine lifts a load of 80 N when you push with 20 N. What is its mechanical advantage (MA)?
14. 14.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2500 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) metre (m) (d) joule (J)
16. 16.🏋️ Pushing a crate 9 m took 1530 J of work. What force was used, in newtons?
17. 17.🏋️ A 16 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 machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
19. 19.🏋️ A force of 200 N did 400 J of work. How many metres did the object move?
20. 20.🏋️ Pushing a crate 10 m took 1600 J of work. What force was used, in newtons?
21. 21.🏋️ A machine lifts a load of 250 N when you push with 50 N. What is its mechanical advantage (MA)?
22. 22.🏋️ A force of 140 N pushes a cart 1 m along the floor. How much work is done, in joules?
23. 23.🏋️ A force of 290 N pushes a cart 8 m along the floor. How much work is done, in joules?
24. 24.🏋️ Pushing a crate 3 m took 510 J of work. What force was used, in newtons?
25. 25.🏋️ A force of 500 N pushes a cart 9 m along the floor. How much work is done, in joules?
26. 26.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
27. 27.🏋️ A machine lifts a load of 1080 N when you push with 180 N. What is its mechanical advantage (MA)?
28. 28.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4750 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ A force of 100 N pushes a cart 6 m along the floor. How much work is done, in joules?
30. 30.🏋️ A force of 300 N pushes a cart 6 m along the floor. How much work is done, in joules?
31. 31.🏋️ A 19 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
32. 32.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
33. 33.🏋️ A force of 400 N pushes a cart 3 m along the floor. How much work is done, in joules?
34. 34.🏋️ A machine lifts a load of 400 N when you push with 200 N. What is its mechanical advantage (MA)?
35. 35.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ Pushing a crate 8 m took 960 J of work. What force was used, in newtons?
37. 37.🏋️ A force of 60 N did 60 J of work. How many metres did the object move?
38. 38.🏋️ A machine lifts a load of 140 N when you push with 70 N. What is its mechanical advantage (MA)?
39. 39.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
40. 40.🏋️ A force of 50 N did 450 J of work. How many metres did the object move?

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