Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 949 · 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 6 m took 1980 J of work. What force was used, in newtons?
2. 2.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load × effort (d) load ÷ effort
3. 3.🏋️ A 9 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.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) only on Mondays (c) yes, by half (d) yes, always
5. 5.🏋️ A force of 320 N pushes a cart 9 m along the floor. How much work is done, in joules?
6. 6.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
7. 7.🏋️ 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)
8. 8.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
9. 9.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
10. 10.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
11. 11.🏋️ A force of 100 N pushes a cart 1 m along the floor. How much work is done, in joules?
12. 12.🏋️ Pushing a crate 3 m took 870 J of work. What force was used, in newtons?
13. 13.🏋️ A machine lifts a load of 480 N when you push with 80 N. What is its mechanical advantage (MA)?
14. 14.🏋️ Work is done when a force moves something … (a) only upwards (b) through a distance (c) without moving it (d) very slowly
15. 15.🏋️ A force of 20 N pushes a cart 7 m along the floor. How much work is done, in joules?
16. 16.🏋️ A force of 410 N pushes a cart 6 m along the floor. How much work is done, in joules?
17. 17.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 1750 N box up it, in newtons? (ideal ramp, no friction)
18. 18.🏋️ A force of 10 N pushes a cart 9 m along the floor. How much work is done, in joules?
19. 19.🏋️ A force of 120 N did 720 J of work. How many metres did the object move?
20. 20.🏋️ A force of 70 N pushes a cart 3 m along the floor. How much work is done, in joules?
21. 21.🏋️ A 19 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
22. 22.🏋️ A 6 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.🏋️ A force of 300 N pushes a cart 4 m along the floor. How much work is done, in joules?
24. 24.🏋️ A machine lifts a load of 80 N when you push with 20 N. What is its mechanical advantage (MA)?
25. 25.🏋️ A machine lifts a load of 400 N when you push with 200 N. What is its mechanical advantage (MA)?
26. 26.🏋️ 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?
27. 27.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
28. 28.🏋️ A 5 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
29. 29.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
30. 30.🏋️ A force of 40 N pushes a cart 2 m along the floor. How much work is done, in joules?
31. 31.🏋️ Pushing a crate 2 m took 340 J of work. What force was used, in newtons?
32. 32.🏋️ Pushing a crate 1 m took 100 J of work. What force was used, in newtons?
33. 33.🏋️ A 6 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ A force of 70 N pushes a cart 2 m along the floor. How much work is done, in joules?
35. 35.🏋️ A machine lifts a load of 400 N when you push with 80 N. What is its mechanical advantage (MA)?
36. 36.🏋️ A 9 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏋️ Pushing a crate 2 m took 940 J of work. What force was used, in newtons?
38. 38.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
40. 40.🏋️ A force of 140 N pushes a cart 8 m along the floor. How much work is done, in joules?

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