Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 22 · 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 smooth ramp is 3 m long and rises 1 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
3. 3.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
4. 4.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
5. 5.🏋️ Pushing a crate 9 m took 2340 J of work. What force was used, in newtons?
6. 6.🏋️ A force of 100 N did 900 J of work. How many metres did the object move?
7. 7.🏋️ A force of 330 N pushes a cart 5 m along the floor. How much work is done, in joules?
8. 8.🏋️ 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?
9. 9.🏋️ Pushing a crate 6 m took 1380 J of work. What force was used, in newtons?
10. 10.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
11. 11.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
12. 12.🏋️ A 4 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 machine lifts a load of 300 N when you push with 150 N. What is its mechanical advantage (MA)?
14. 14.🏋️ A machine lifts a load of 420 N when you push with 140 N. What is its mechanical advantage (MA)?
15. 15.🏋️ A force of 40 N did 120 J of work. How many metres did the object move?
16. 16.🏋️ A force of 90 N did 180 J of work. How many metres did the object move?
17. 17.🏋️ A force of 30 N did 210 J of work. How many metres did the object move?
18. 18.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
19. 19.🏋️ 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?
20. 20.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
21. 21.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
22. 22.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) yes, by half (c) only on Mondays (d) no, work stays the same
23. 23.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A force of 10 N did 100 J of work. How many metres did the object move?
25. 25.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) watt hour (d) joule (J)
26. 26.🏋️ A machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
27. 27.🏋️ A machine lifts a load of 180 N when you push with 90 N. What is its mechanical advantage (MA)?
28. 28.🏋️ 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?
29. 29.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
30. 30.🏋️ A force of 480 N pushes a cart 8 m along the floor. How much work is done, in joules?
31. 31.🏋️ A force of 100 N pushes a cart 10 m along the floor. How much work is done, in joules?
32. 32.🏋️ A force of 360 N pushes a cart 10 m along the floor. How much work is done, in joules?
33. 33.🏋️ A force of 150 N did 1500 J of work. How many metres did the object move?
34. 34.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
35. 35.🏋️ A machine lifts a load of 760 N when you push with 190 N. What is its mechanical advantage (MA)?
36. 36.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 5000 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ 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?
38. 38.🏋️ A force of 390 N did 2730 J of work. How many metres did the object move?
39. 39.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
40. 40.🏋️ 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?

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