Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 882 · 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 2 m took 800 J of work. What force was used, in newtons?
2. 2.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
3. 3.🏋️ A 7 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ A force of 420 N did 3360 J of work. How many metres did the object move?
5. 5.🏋️ A 6 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
6. 6.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1300 N box up it, in newtons? (ideal ramp, no friction)
7. 7.🏋️ Pushing a crate 3 m took 1260 J of work. What force was used, in newtons?
8. 8.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
9. 9.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
10. 10.🏋️ A machine lifts a load of 360 N when you push with 180 N. What is its mechanical advantage (MA)?
11. 11.🏋️ A machine lifts a load of 280 N when you push with 70 N. What is its mechanical advantage (MA)?
12. 12.🏋️ A force of 330 N pushes a cart 6 m along the floor. How much work is done, in joules?
13. 13.🏋️ A force of 160 N pushes a cart 7 m along the floor. How much work is done, in joules?
14. 14.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A force of 150 N did 1500 J of work. How many metres did the object move?
16. 16.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) yes, by half (d) only on Mondays
18. 18.🏋️ A force of 150 N did 600 J of work. How many metres did the object move?
19. 19.🏋️ Pushing a crate 3 m took 360 J of work. What force was used, in newtons?
20. 20.🏋️ A force of 260 N pushes a cart 6 m along the floor. How much work is done, in joules?
21. 21.🏋️ Pushing a crate 2 m took 200 J of work. What force was used, in newtons?
22. 22.🏋️ A 12 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
24. 24.🏋️ A force of 290 N did 2030 J of work. How many metres did the object move?
25. 25.🏋️ A 10 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
26. 26.🏋️ A force of 350 N pushes a cart 1 m along the floor. How much work is done, in joules?
27. 27.🏋️ A force of 250 N pushes a cart 1 m along the floor. How much work is done, in joules?
28. 28.🏋️ Pushing a crate 2 m took 680 J of work. What force was used, in newtons?
29. 29.🏋️ A force of 470 N pushes a cart 3 m along the floor. How much work is done, in joules?
30. 30.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
31. 31.🏋️ 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?
32. 32.🏋️ Pushing a crate 3 m took 1320 J of work. What force was used, in newtons?
33. 33.🏋️ A 13 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
35. 35.🏋️ Pushing a crate 9 m took 2790 J of work. What force was used, in newtons?
36. 36.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A force of 30 N pushes a cart 7 m along the floor. How much work is done, in joules?
38. 38.🏋️ A force of 80 N pushes a cart 8 m along the floor. How much work is done, in joules?
39. 39.🏋️ A force of 220 N pushes a cart 5 m along the floor. How much work is done, in joules?
40. 40.🏋️ A 9 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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