Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 936 · 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.🏋️ Pushing a crate 5 m took 1150 J of work. What force was used, in newtons?
2. 2.🏋️ A force of 390 N pushes a cart 4 m along the floor. How much work is done, in joules?
3. 3.🏋️ A 3 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ A force of 270 N pushes a cart 1 m along the floor. How much work is done, in joules?
5. 5.🏋️ Pushing a crate 8 m took 2880 J of work. What force was used, in newtons?
6. 6.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load ÷ effort (d) load × effort
7. 7.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
8. 8.🏋️ Pushing a crate 10 m took 3800 J of work. What force was used, in newtons?
9. 9.🏋️ A 15 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
10. 10.🏋️ A force of 480 N did 4320 J of work. How many metres did the object move?
11. 11.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
12. 12.🏋️ A 1 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 410 N pushes a cart 3 m along the floor. How much work is done, in joules?
14. 14.🏋️ Pushing a crate 1 m took 350 J of work. What force was used, in newtons?
15. 15.🏋️ A force of 300 N pushes a cart 5 m along the floor. How much work is done, in joules?
16. 16.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
17. 17.🏋️ A force of 320 N did 2880 J of work. How many metres did the object move?
18. 18.🏋️ A force of 390 N pushes a cart 1 m along the floor. How much work is done, in joules?
19. 19.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) only on Mondays (d) yes, always
20. 20.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
21. 21.🏋️ A force of 70 N did 210 J of work. How many metres did the object move?
22. 22.🏋️ A force of 440 N did 4400 J of work. How many metres did the object move?
23. 23.🏋️ A machine lifts a load of 320 N when you push with 160 N. What is its mechanical advantage (MA)?
24. 24.🏋️ 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?
25. 25.🏋️ A force of 110 N did 1100 J of work. How many metres did the object move?
26. 26.🏋️ A force of 120 N pushes a cart 4 m along the floor. How much work is done, in joules?
27. 27.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
28. 28.🏋️ A force of 360 N pushes a cart 3 m along the floor. How much work is done, in joules?
29. 29.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ A force of 170 N pushes a cart 6 m along the floor. How much work is done, in joules?
32. 32.🏋️ Pushing a crate 6 m took 720 J of work. What force was used, in newtons?
33. 33.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
34. 34.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
35. 35.🏋️ A force of 100 N pushes a cart 5 m along the floor. How much work is done, in joules?
36. 36.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ Pushing a crate 10 m took 1900 J of work. What force was used, in newtons?
38. 38.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
40. 40.🏋️ Pushing a crate 4 m took 760 J of work. What force was used, in newtons?

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