Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 292 · 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 pushes a cart 9 m along the floor. How much work is done, in joules?
2. 2.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
3. 3.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1300 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) newton (N) (d) watt hour
5. 5.🏋️ A force of 260 N pushes a cart 6 m along the floor. How much work is done, in joules?
6. 6.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
7. 7.🏋️ 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?
8. 8.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load + effort (d) load × effort
9. 9.🏋️ A force of 490 N did 3920 J of work. How many metres did the object move?
10. 10.🏋️ A 5 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
11. 11.🏋️ A force of 210 N pushes a cart 9 m along the floor. How much work is done, in joules?
12. 12.🏋️ A 3 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏋️ A force of 50 N pushes a cart 7 m along the floor. How much work is done, in joules?
14. 14.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1950 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A longer ramp to the same height needs … (a) the same effort (b) more effort (c) less effort (d) no effort
16. 16.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) only on Mondays (d) yes, always
17. 17.🏋️ A force of 500 N pushes a cart 2 m along the floor. How much work is done, in joules?
18. 18.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ Pushing a crate 9 m took 810 J of work. What force was used, in newtons?
20. 20.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
21. 21.🏋️ A force of 430 N pushes a cart 3 m along the floor. How much work is done, in joules?
22. 22.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A force of 130 N pushes a cart 1 m along the floor. How much work is done, in joules?
24. 24.🏋️ Pushing a crate 7 m took 1050 J of work. What force was used, in newtons?
25. 25.🏋️ A 19 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 410 N pushes a cart 1 m along the floor. How much work is done, in joules?
27. 27.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
28. 28.🏋️ A force of 80 N did 240 J of work. How many metres did the object move?
29. 29.🏋️ A force of 150 N did 300 J of work. How many metres did the object move?
30. 30.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ Pushing a crate 2 m took 560 J of work. What force was used, in newtons?
32. 32.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 750 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ A force of 470 N pushes a cart 7 m along the floor. How much work is done, in joules?
34. 34.🏋️ A machine lifts a load of 420 N when you push with 70 N. What is its mechanical advantage (MA)?
35. 35.🏋️ Pushing a crate 7 m took 2800 J of work. What force was used, in newtons?
36. 36.🏋️ A force of 40 N did 80 J of work. How many metres did the object move?
37. 37.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.🏋️ A force of 470 N pushes a cart 3 m along the floor. How much work is done, in joules?
39. 39.🏋️ Pushing a crate 9 m took 900 J of work. What force was used, in newtons?
40. 40.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)

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