Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 674 · 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) without moving it (b) only upwards (c) very slowly (d) through a distance
2. 2.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
3. 3.🏋️ A force of 500 N pushes a cart 4 m along the floor. How much work is done, in joules?
4. 4.🏋️ A machine lifts a load of 540 N when you push with 90 N. What is its mechanical advantage (MA)?
5. 5.🏋️ 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?
6. 6.🏋️ 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)
7. 7.🏋️ Pushing a crate 1 m took 10 J of work. What force was used, in newtons?
8. 8.🏋️ A machine lifts a load of 240 N when you push with 60 N. What is its mechanical advantage (MA)?
9. 9.🏋️ A force of 220 N pushes a cart 9 m along the floor. How much work is done, in joules?
10. 10.🏋️ Pushing a crate 7 m took 2590 J of work. What force was used, in newtons?
11. 11.🏋️ A force of 130 N pushes a cart 3 m along the floor. How much work is done, in joules?
12. 12.🏋️ A 3 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏋️ A force of 120 N pushes a cart 4 m along the floor. How much work is done, in joules?
14. 14.🏋️ A force of 200 N pushes a cart 3 m along the floor. How much work is done, in joules?
15. 15.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
16. 16.🏋️ 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)
17. 17.🏋️ A machine lifts a load of 320 N when you push with 160 N. What is its mechanical advantage (MA)?
18. 18.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) effort ÷ load (d) load × effort
19. 19.🏋️ A 19 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.🏋️ Pushing a crate 6 m took 2100 J of work. What force was used, in newtons?
21. 21.🏋️ A force of 160 N pushes a cart 10 m along the floor. How much work is done, in joules?
22. 22.🏋️ A force of 210 N pushes a cart 1 m along the floor. How much work is done, in joules?
23. 23.🏋️ A 14 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
24. 24.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1750 N box up it, in newtons? (ideal ramp, no friction)
25. 25.🏋️ Pushing a crate 4 m took 1360 J of work. What force was used, in newtons?
26. 26.🏋️ A force of 130 N did 520 J of work. How many metres did the object move?
27. 27.🏋️ A 6 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
28. 28.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ A 20 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
31. 31.🏋️ A force of 360 N pushes a cart 3 m along the floor. How much work is done, in joules?
32. 32.🏋️ A force of 420 N pushes a cart 8 m along the floor. How much work is done, in joules?
33. 33.🏋️ A 15 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ 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?
35. 35.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ 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)
37. 37.🏋️ A force of 270 N pushes a cart 6 m along the floor. How much work is done, in joules?
38. 38.🏋️ Pushing a crate 3 m took 900 J of work. What force was used, in newtons?
39. 39.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
40. 40.🏋️ Pushing a crate 5 m took 200 J of work. What force was used, in newtons?

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