Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 48 · 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 250 N pushes a cart 6 m along the floor. How much work is done, in joules?
2. 2.🏋️ A force of 180 N pushes a cart 8 m along the floor. How much work is done, in joules?
3. 3.🏋️ Pushing a crate 7 m took 2520 J of work. What force was used, in newtons?
4. 4.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
5. 5.🏋️ A force of 160 N did 1280 J of work. How many metres did the object move?
6. 6.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) newton (N) (d) metre (m)
7. 7.🏋️ A force of 440 N did 1760 J of work. How many metres did the object move?
8. 8.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?
9. 9.🏋️ A force of 100 N pushes a cart 4 m along the floor. How much work is done, in joules?
10. 10.🏋️ Pushing a crate 3 m took 240 J of work. What force was used, in newtons?
11. 11.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
12. 12.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🏋️ A force of 490 N pushes a cart 4 m along the floor. How much work is done, in joules?
14. 14.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A force of 190 N did 570 J of work. How many metres did the object move?
16. 16.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) yes, always (d) only on Mondays
17. 17.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load + effort (d) load ÷ effort
18. 18.🏋️ A 13 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
20. 20.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) through a distance (d) only upwards
21. 21.🏋️ 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?
22. 22.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
23. 23.🏋️ A force of 230 N pushes a cart 4 m along the floor. How much work is done, in joules?
24. 24.🏋️ A machine lifts a load of 560 N when you push with 140 N. What is its mechanical advantage (MA)?
25. 25.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
26. 26.🏋️ A force of 340 N did 2040 J of work. How many metres did the object move?
27. 27.🏋️ A 12 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
28. 28.🏋️ A force of 80 N pushes a cart 6 m along the floor. How much work is done, in joules?
29. 29.🏋️ A force of 120 N pushes a cart 7 m along the floor. How much work is done, in joules?
30. 30.🏋️ 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?
31. 31.🏋️ A force of 60 N pushes a cart 2 m along the floor. How much work is done, in joules?
32. 32.🏋️ Pushing a crate 2 m took 620 J of work. What force was used, in newtons?
33. 33.🏋️ A force of 460 N pushes a cart 7 m along the floor. How much work is done, in joules?
34. 34.🏋️ A force of 270 N pushes a cart 5 m along the floor. How much work is done, in joules?
35. 35.🏋️ A force of 110 N did 550 J of work. How many metres did the object move?
36. 36.🏋️ A force of 230 N pushes a cart 6 m along the floor. How much work is done, in joules?
37. 37.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 100 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 700 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A force of 50 N pushes a cart 5 m along the floor. How much work is done, in joules?
40. 40.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)

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