Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 712 · 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 120 N when you push with 60 N. What is its mechanical advantage (MA)?
2. 2.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
3. 3.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ A force of 40 N did 320 J of work. How many metres did the object move?
5. 5.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) joule (J) (d) newton (N)
6. 6.🏋️ Pushing a crate 6 m took 420 J of work. What force was used, in newtons?
7. 7.🏋️ A force of 180 N pushes a cart 5 m along the floor. How much work is done, in joules?
8. 8.🏋️ A force of 400 N pushes a cart 4 m along the floor. How much work is done, in joules?
9. 9.🏋️ A force of 50 N pushes a cart 2 m along the floor. How much work is done, in joules?
10. 10.🏋️ A force of 200 N did 1800 J of work. How many metres did the object move?
11. 11.🏋️ Pushing a crate 2 m took 640 J of work. What force was used, in newtons?
12. 12.🏋️ A force of 210 N pushes a cart 1 m along the floor. How much work is done, in joules?
13. 13.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
14. 14.🏋️ 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?
15. 15.🏋️ A force of 160 N pushes a cart 7 m along the floor. How much work is done, in joules?
16. 16.🏋️ A force of 200 N pushes a cart 4 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 320 N did 1600 J of work. How many metres did the object move?
18. 18.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
19. 19.🏋️ Pushing a crate 4 m took 160 J of work. What force was used, in newtons?
20. 20.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load ÷ effort (d) load + effort
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.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A force of 290 N pushes a cart 4 m along the floor. How much work is done, in joules?
24. 24.🏋️ A force of 100 N pushes a cart 3 m along the floor. How much work is done, in joules?
25. 25.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) less effort (d) more effort
26. 26.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 150 N box up it, in newtons? (ideal ramp, no friction)
28. 28.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ A force of 150 N pushes a cart 10 m along the floor. How much work is done, in joules?
31. 31.🏋️ 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?
32. 32.🏋️ A force of 400 N pushes a cart 6 m along the floor. How much work is done, in joules?
33. 33.🏋️ Pushing a crate 6 m took 2820 J of work. What force was used, in newtons?
34. 34.🏋️ A 10 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
35. 35.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4250 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
38. 38.🏋️ Pushing a crate 2 m took 940 J of work. What force was used, in newtons?
39. 39.🏋️ Pushing a crate 1 m took 440 J of work. What force was used, in newtons?
40. 40.🏋️ A 14 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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