Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 386 · 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 400 N pushes a cart 8 m along the floor. How much work is done, in joules?
2. 2.🏋️ A force of 110 N did 1100 J of work. How many metres did the object move?
3. 3.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
4. 4.🏋️ 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)
5. 5.🏋️ A machine lifts a load of 300 N when you push with 150 N. What is its mechanical advantage (MA)?
6. 6.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
7. 7.🏋️ 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)
8. 8.🏋️ A machine lifts a load of 480 N when you push with 120 N. What is its mechanical advantage (MA)?
9. 9.🏋️ A force of 90 N pushes a cart 2 m along the floor. How much work is done, in joules?
10. 10.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
11. 11.🏋️ A force of 460 N did 460 J of work. How many metres did the object move?
12. 12.🏋️ A force of 190 N did 380 J of work. How many metres did the object move?
13. 13.🏋️ An 8 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
14. 14.🏋️ Pushing a crate 6 m took 2340 J of work. What force was used, in newtons?
15. 15.🏋️ Pushing a crate 2 m took 240 J of work. What force was used, in newtons?
16. 16.🏋️ A force of 10 N pushes a cart 8 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 10 N pushes a cart 5 m along the floor. How much work is done, in joules?
18. 18.🏋️ A 16 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.🏋️ Pushing a crate 2 m took 320 J of work. What force was used, in newtons?
20. 20.🏋️ A machine lifts a load of 1200 N when you push with 200 N. What is its mechanical advantage (MA)?
21. 21.🏋️ Pushing a crate 10 m took 4300 J of work. What force was used, in newtons?
22. 22.🏋️ 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?
23. 23.🏋️ A force of 480 N did 3840 J of work. How many metres did the object move?
24. 24.🏋️ A force of 330 N pushes a cart 9 m along the floor. How much work is done, in joules?
25. 25.🏋️ Pushing a crate 3 m took 1080 J of work. What force was used, in newtons?
26. 26.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) watt hour (d) metre (m)
27. 27.🏋️ A force of 420 N pushes a cart 9 m along the floor. How much work is done, in joules?
28. 28.🏋️ A force of 320 N did 960 J of work. How many metres did the object move?
29. 29.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
30. 30.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5700 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
32. 32.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 250 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) effort ÷ load (d) load ÷ effort
34. 34.🏋️ A force of 230 N pushes a cart 3 m along the floor. How much work is done, in joules?
35. 35.🏋️ Pushing a crate 6 m took 720 J of work. What force was used, in newtons?
36. 36.🏋️ An 18 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏋️ A machine lifts a load of 720 N when you push with 180 N. What is its mechanical advantage (MA)?
38. 38.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A force of 270 N pushes a cart 4 m along the floor. How much work is done, in joules?
40. 40.🏋️ A force of 440 N did 3520 J of work. How many metres did the object move?

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