Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 566 · 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.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
2. 2.🏋️ A force of 320 N pushes a cart 2 m along the floor. How much work is done, in joules?
3. 3.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ Pushing a crate 3 m took 1110 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 500 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ Pushing a crate 4 m took 1720 J of work. What force was used, in newtons?
7. 7.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
8. 8.🏋️ 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?
9. 9.🏋️ 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)
10. 10.🏋️ A 1 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
11. 11.🏋️ A longer ramp to the same height needs … (a) less effort (b) no effort (c) the same effort (d) more effort
12. 12.🏋️ A 7 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏋️ A force of 460 N pushes a cart 9 m along the floor. How much work is done, in joules?
14. 14.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load ÷ effort (d) load × effort
15. 15.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) metre (m) (d) joule (J)
16. 16.🏋️ A machine lifts a load of 440 N when you push with 110 N. What is its mechanical advantage (MA)?
17. 17.🏋️ A force of 380 N pushes a cart 10 m along the floor. How much work is done, in joules?
18. 18.🏋️ A force of 170 N pushes a cart 2 m along the floor. How much work is done, in joules?
19. 19.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) no, work stays the same (c) only on Mondays (d) yes, by half
20. 20.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
21. 21.🏋️ A machine lifts a load of 1020 N when you push with 170 N. What is its mechanical advantage (MA)?
22. 22.🏋️ A force of 30 N did 150 J of work. How many metres did the object move?
23. 23.🏋️ Pushing a crate 8 m took 720 J of work. What force was used, in newtons?
24. 24.🏋️ Pushing a crate 10 m took 3400 J of work. What force was used, in newtons?
25. 25.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
26. 26.🏋️ A force of 400 N did 1600 J of work. How many metres did the object move?
27. 27.🏋️ A force of 40 N pushes a cart 2 m along the floor. How much work is done, in joules?
28. 28.🏋️ A force of 30 N pushes a cart 3 m along the floor. How much work is done, in joules?
29. 29.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 2600 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ Pushing a crate 3 m took 900 J of work. What force was used, in newtons?
31. 31.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
32. 32.🏋️ Pushing a crate 5 m took 1400 J of work. What force was used, in newtons?
33. 33.🏋️ 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)
34. 34.🏋️ A force of 440 N did 2200 J of work. How many metres did the object move?
35. 35.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ A 12 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏋️ Pushing a crate 1 m took 470 J of work. What force was used, in newtons?
38. 38.🏋️ Pushing a crate 2 m took 360 J of work. What force was used, in newtons?
39. 39.🏋️ A force of 120 N pushes a cart 5 m along the floor. How much work is done, in joules?
40. 40.🏋️ A force of 340 N pushes a cart 4 m along the floor. How much work is done, in joules?

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