Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 568 · 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 30 N when you push with 10 N. What is its mechanical advantage (MA)?
2. 2.🏋️ An 8 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
3. 3.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
4. 4.🏋️ A machine lifts a load of 240 N when you push with 60 N. What is its mechanical advantage (MA)?
5. 5.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
6. 6.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
7. 7.🏋️ A 19 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
8. 8.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) no, work stays the same (d) only on Mondays
9. 9.🏋️ A force of 90 N pushes a cart 5 m along the floor. How much work is done, in joules?
10. 10.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) no effort (d) more effort
11. 11.🏋️ 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)
12. 12.🏋️ A machine lifts a load of 900 N when you push with 150 N. What is its mechanical advantage (MA)?
13. 13.🏋️ A force of 160 N pushes a cart 2 m along the floor. How much work is done, in joules?
14. 14.🏋️ A force of 130 N pushes a cart 2 m along the floor. How much work is done, in joules?
15. 15.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
16. 16.🏋️ Pushing a crate 9 m took 1710 J of work. What force was used, in newtons?
17. 17.🏋️ A force of 270 N pushes a cart 5 m along the floor. How much work is done, in joules?
18. 18.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) effort ÷ load (d) load × effort
19. 19.🏋️ A force of 100 N pushes a cart 10 m along the floor. How much work is done, in joules?
20. 20.🏋️ A force of 70 N did 140 J of work. How many metres did the object move?
21. 21.🏋️ A machine lifts a load of 540 N when you push with 90 N. What is its mechanical advantage (MA)?
22. 22.🏋️ A machine lifts a load of 1080 N when you push with 180 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
25. 25.🏋️ An 8 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 force of 80 N pushes a cart 4 m along the floor. How much work is done, in joules?
27. 27.🏋️ A force of 440 N pushes a cart 2 m along the floor. How much work is done, in joules?
28. 28.🏋️ 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?
29. 29.🏋️ Pushing a crate 1 m took 330 J of work. What force was used, in newtons?
30. 30.🏋️ A force of 150 N did 1500 J of work. How many metres did the object move?
31. 31.🏋️ A force of 440 N pushes a cart 1 m along the floor. How much work is done, in joules?
32. 32.🏋️ Pushing a crate 6 m took 2880 J of work. What force was used, in newtons?
33. 33.🏋️ A machine lifts a load of 800 N when you push with 160 N. What is its mechanical advantage (MA)?
34. 34.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) newton (N) (d) metre (m)
35. 35.🏋️ A force of 140 N pushes a cart 8 m along the floor. How much work is done, in joules?
36. 36.🏋️ A force of 200 N pushes a cart 3 m along the floor. How much work is done, in joules?
37. 37.🏋️ 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)
38. 38.🏋️ A machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
39. 39.🏋️ A force of 220 N pushes a cart 6 m along the floor. How much work is done, in joules?
40. 40.🏋️ A 4 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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