Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 381 · 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 420 N pushes a cart 8 m along the floor. How much work is done, in joules?
2. 2.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
3. 3.🏋️ A longer ramp to the same height needs … (a) the same effort (b) more effort (c) less effort (d) no effort
4. 4.🏋️ A force of 90 N pushes a cart 1 m along the floor. How much work is done, in joules?
5. 5.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
6. 6.🏋️ A force of 410 N pushes a cart 4 m along the floor. How much work is done, in joules?
7. 7.🏋️ An 11 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.🏋️ A force of 340 N did 340 J of work. How many metres did the object move?
9. 9.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
10. 10.🏋️ A force of 20 N did 140 J of work. How many metres did the object move?
11. 11.🏋️ A force of 140 N did 1260 J of work. How many metres did the object move?
12. 12.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1950 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) yes, always (d) only on Mondays
14. 14.🏋️ A force of 60 N pushes a cart 2 m along the floor. How much work is done, in joules?
15. 15.🏋️ Pushing a crate 9 m took 540 J of work. What force was used, in newtons?
16. 16.🏋️ A 2 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
17. 17.🏋️ A force of 410 N pushes a cart 3 m along the floor. How much work is done, in joules?
18. 18.🏋️ A force of 250 N did 750 J of work. How many metres did the object move?
19. 19.🏋️ A 13 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
20. 20.🏋️ Pushing a crate 3 m took 840 J of work. What force was used, in newtons?
21. 21.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
22. 22.🏋️ Pushing a crate 10 m took 4300 J of work. What force was used, in newtons?
23. 23.🏋️ A force of 200 N did 1600 J of work. How many metres did the object move?
24. 24.🏋️ Pushing a crate 7 m took 1960 J of work. What force was used, in newtons?
25. 25.🏋️ 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?
26. 26.🏋️ A machine lifts a load of 750 N when you push with 150 N. What is its mechanical advantage (MA)?
27. 27.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 150 N box up it, in newtons? (ideal ramp, no friction)
28. 28.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
29. 29.🏋️ A 19 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
30. 30.🏋️ 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?
31. 31.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 3750 N box up it, in newtons? (ideal ramp, no friction)
32. 32.🏋️ An 18 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
33. 33.🏋️ A force of 240 N pushes a cart 10 m along the floor. How much work is done, in joules?
34. 34.🏋️ A force of 450 N did 4050 J of work. How many metres did the object move?
35. 35.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
36. 36.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ A force of 440 N did 3960 J of work. How many metres did the object move?
38. 38.🏋️ Pushing a crate 3 m took 30 J of work. What force was used, in newtons?
39. 39.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
40. 40.🏋️ Pushing a crate 9 m took 3690 J of work. What force was used, in newtons?

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