Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 168 · 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 smooth ramp is 12 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🏋️ A machine lifts a load of 40 N when you push with 10 N. What is its mechanical advantage (MA)?
3. 3.🏋️ Pushing a crate 5 m took 450 J of work. What force was used, in newtons?
4. 4.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) through a distance (d) only upwards
5. 5.🏋️ A force of 460 N pushes a cart 10 m along the floor. How much work is done, in joules?
6. 6.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
7. 7.🏋️ 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?
8. 8.🏋️ A 15 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
9. 9.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, always (d) yes, by half
10. 10.🏋️ A force of 300 N did 2700 J of work. How many metres did the object move?
11. 11.🏋️ A force of 490 N did 4410 J of work. How many metres did the object move?
12. 12.🏋️ Pushing a crate 9 m took 1080 J of work. What force was used, in newtons?
13. 13.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
14. 14.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2600 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A 16 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.🏋️ A force of 340 N pushes a cart 2 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 10 N pushes a cart 8 m along the floor. How much work is done, in joules?
18. 18.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ A 6 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
20. 20.🏋️ A force of 110 N pushes a cart 5 m along the floor. How much work is done, in joules?
21. 21.🏋️ A force of 430 N pushes a cart 5 m along the floor. How much work is done, in joules?
22. 22.🏋️ 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?
23. 23.🏋️ Pushing a crate 2 m took 720 J of work. What force was used, in newtons?
24. 24.🏋️ A machine lifts a load of 960 N when you push with 160 N. What is its mechanical advantage (MA)?
25. 25.🏋️ A force of 250 N pushes a cart 10 m along the floor. How much work is done, in joules?
26. 26.🏋️ Pushing a crate 8 m took 2400 J of work. What force was used, in newtons?
27. 27.🏋️ A force of 270 N did 270 J of work. How many metres did the object move?
28. 28.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) metre (m) (d) watt hour
29. 29.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ A force of 380 N pushes a cart 8 m along the floor. How much work is done, in joules?
31. 31.🏋️ A force of 170 N did 1530 J of work. How many metres did the object move?
32. 32.🏋️ A machine lifts a load of 80 N when you push with 20 N. What is its mechanical advantage (MA)?
33. 33.🏋️ A force of 400 N pushes a cart 7 m along the floor. How much work is done, in joules?
34. 34.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
35. 35.🏋️ A force of 130 N pushes a cart 5 m along the floor. How much work is done, in joules?
36. 36.🏋️ Pushing a crate 6 m took 2220 J of work. What force was used, in newtons?
37. 37.🏋️ 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?
38. 38.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
40. 40.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)

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