Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 128 · 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 machine lifts a load of 200 N when you push with 50 N. What is its mechanical advantage (MA)?
2. 2.🏋️ An 11 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
3. 3.🏋️ Pushing a crate 9 m took 2610 J of work. What force was used, in newtons?
4. 4.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) the same effort (d) no effort
5. 5.🏋️ 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)
6. 6.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 750 N box up it, in newtons? (ideal ramp, no friction)
7. 7.🏋️ Pushing a crate 7 m took 1540 J of work. What force was used, in newtons?
8. 8.🏋️ A machine lifts a load of 700 N when you push with 140 N. What is its mechanical advantage (MA)?
9. 9.🏋️ A force of 430 N pushes a cart 3 m along the floor. How much work is done, in joules?
10. 10.🏋️ Pushing a crate 10 m took 1100 J of work. What force was used, in newtons?
11. 11.🏋️ Pushing a crate 8 m took 3680 J of work. What force was used, in newtons?
12. 12.🏋️ Pushing a crate 5 m took 250 J of work. What force was used, in newtons?
13. 13.🏋️ A force of 230 N did 920 J of work. How many metres did the object move?
14. 14.🏋️ A machine lifts a load of 40 N when you push with 10 N. What is its mechanical advantage (MA)?
15. 15.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
16. 16.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
17. 17.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.🏋️ A force of 70 N pushes a cart 3 m along the floor. How much work is done, in joules?
19. 19.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) watt hour (d) newton (N)
20. 20.🏋️ A 3 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
21. 21.🏋️ A force of 290 N pushes a cart 6 m along the floor. How much work is done, in joules?
22. 22.🏋️ A force of 370 N did 3330 J of work. How many metres did the object move?
23. 23.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
24. 24.🏋️ A machine lifts a load of 440 N when you push with 110 N. What is its mechanical advantage (MA)?
25. 25.🏋️ A machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
26. 26.🏋️ 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?
27. 27.🏋️ A force of 130 N pushes a cart 1 m along the floor. How much work is done, in joules?
28. 28.🏋️ Pushing a crate 8 m took 1600 J of work. What force was used, in newtons?
29. 29.🏋️ A machine lifts a load of 390 N when you push with 130 N. What is its mechanical advantage (MA)?
30. 30.🏋️ A force of 150 N pushes a cart 10 m along the floor. How much work is done, in joules?
31. 31.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
32. 32.🏋️ A 15 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
33. 33.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
34. 34.🏋️ A force of 370 N pushes a cart 2 m along the floor. How much work is done, in joules?
35. 35.🏋️ A force of 290 N pushes a cart 1 m along the floor. How much work is done, in joules?
36. 36.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) yes, by half (d) only on Mondays
37. 37.🏋️ A force of 410 N pushes a cart 7 m along the floor. How much work is done, in joules?
38. 38.🏋️ A force of 350 N did 2450 J of work. How many metres did the object move?
39. 39.🏋️ 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?
40. 40.🏋️ A force of 150 N pushes a cart 1 m along the floor. How much work is done, in joules?

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