Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 704 · 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 280 N did 1400 J of work. How many metres did the object move?
2. 2.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) only on Mondays (d) yes, always
3. 3.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ Pushing a crate 2 m took 620 J of work. What force was used, in newtons?
5. 5.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ A 20 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
7. 7.🏋️ A force of 170 N pushes a cart 8 m along the floor. How much work is done, in joules?
8. 8.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
9. 9.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
10. 10.🏋️ 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)
11. 11.🏋️ A machine lifts a load of 640 N when you push with 160 N. What is its mechanical advantage (MA)?
12. 12.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) without moving it (d) only upwards
13. 13.🏋️ A force of 210 N pushes a cart 3 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 300 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A force of 40 N did 400 J of work. How many metres did the object move?
16. 16.🏋️ 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)
17. 17.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
18. 18.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
19. 19.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) metre (m) (d) newton (N)
20. 20.🏋️ Pushing a crate 2 m took 400 J of work. What force was used, in newtons?
21. 21.🏋️ 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)
22. 22.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A force of 330 N did 1320 J of work. How many metres did the object move?
24. 24.🏋️ 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?
25. 25.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) no effort (d) the same effort
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 680 N when you push with 170 N. What is its mechanical advantage (MA)?
28. 28.🏋️ 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)
29. 29.🏋️ Pushing a crate 7 m took 910 J of work. What force was used, in newtons?
30. 30.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
31. 31.🏋️ A machine lifts a load of 360 N when you push with 180 N. What is its mechanical advantage (MA)?
32. 32.🏋️ 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?
33. 33.🏋️ A force of 160 N pushes a cart 1 m along the floor. How much work is done, in joules?
34. 34.🏋️ Pushing a crate 8 m took 1440 J of work. What force was used, in newtons?
35. 35.🏋️ A force of 410 N pushes a cart 9 m along the floor. How much work is done, in joules?
36. 36.🏋️ A machine lifts a load of 450 N when you push with 90 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A force of 380 N pushes a cart 8 m along the floor. How much work is done, in joules?
38. 38.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ Pushing a crate 3 m took 1380 J of work. What force was used, in newtons?
40. 40.🏋️ A force of 290 N pushes a cart 6 m along the floor. How much work is done, in joules?

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