Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 235 · 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 longer ramp to the same height needs … (a) the same effort (b) no effort (c) less effort (d) more effort
2. 2.🏋️ A force of 280 N pushes a cart 5 m along the floor. How much work is done, in joules?
3. 3.🏋️ Pushing a crate 5 m took 1350 J of work. What force was used, in newtons?
4. 4.🏋️ A machine lifts a load of 400 N when you push with 100 N. What is its mechanical advantage (MA)?
5. 5.🏋️ A force of 250 N pushes a cart 5 m along the floor. How much work is done, in joules?
6. 6.🏋️ 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?
7. 7.🏋️ A 3 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 force of 250 N pushes a cart 6 m along the floor. How much work is done, in joules?
9. 9.🏋️ A force of 360 N did 1440 J of work. How many metres did the object move?
10. 10.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load × effort (d) load + effort
11. 11.🏋️ 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?
12. 12.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
13. 13.🏋️ Pushing a crate 10 m took 1800 J of work. What force was used, in newtons?
14. 14.🏋️ 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?
15. 15.🏋️ A force of 20 N pushes a cart 7 m along the floor. How much work is done, in joules?
16. 16.🏋️ 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)
17. 17.🏋️ A machine lifts a load of 380 N when you push with 190 N. What is its mechanical advantage (MA)?
18. 18.🏋️ A force of 220 N did 660 J of work. How many metres did the object move?
19. 19.🏋️ Pushing a crate 2 m took 540 J of work. What force was used, in newtons?
20. 20.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) newton (N) (d) metre (m)
21. 21.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 5000 N box up it, in newtons? (ideal ramp, no friction)
22. 22.🏋️ A force of 40 N did 200 J of work. How many metres did the object move?
23. 23.🏋️ A force of 10 N pushes a cart 10 m along the floor. How much work is done, in joules?
24. 24.🏋️ Pushing a crate 7 m took 1960 J of work. What force was used, in newtons?
25. 25.🏋️ A 15 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
26. 26.🏋️ A force of 120 N did 480 J of work. How many metres did the object move?
27. 27.🏋️ A force of 460 N pushes a cart 3 m along the floor. How much work is done, in joules?
28. 28.🏋️ A machine lifts a load of 300 N when you push with 150 N. What is its mechanical advantage (MA)?
29. 29.🏋️ Pushing a crate 10 m took 1600 J of work. What force was used, in newtons?
30. 30.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ 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)
32. 32.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
33. 33.🏋️ Pushing a crate 5 m took 850 J of work. What force was used, in newtons?
34. 34.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) yes, by half (d) no, work stays the same
35. 35.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ A 6 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.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ 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?
39. 39.🏋️ A force of 220 N did 1100 J of work. How many metres did the object move?
40. 40.🏋️ A force of 440 N pushes a cart 9 m along the floor. How much work is done, in joules?

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