Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 244 · 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.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
2. 2.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) only on Mondays (c) yes, always (d) no, work stays the same
3. 3.🏋️ A force of 10 N pushes a cart 10 m along the floor. How much work is done, in joules?
4. 4.🏋️ A machine lifts a load of 400 N when you push with 80 N. What is its mechanical advantage (MA)?
5. 5.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) metre (m) (d) newton (N)
7. 7.🏋️ A machine lifts a load of 90 N when you push with 30 N. What is its mechanical advantage (MA)?
8. 8.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
9. 9.🏋️ A machine lifts a load of 240 N when you push with 40 N. What is its mechanical advantage (MA)?
10. 10.🏋️ Pushing a crate 2 m took 780 J of work. What force was used, in newtons?
11. 11.🏋️ A 7 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
12. 12.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🏋️ A force of 160 N pushes a cart 6 m along the floor. How much work is done, in joules?
14. 14.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
15. 15.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4800 N box up it, in newtons? (ideal ramp, no friction)
16. 16.🏋️ A force of 440 N pushes a cart 8 m along the floor. How much work is done, in joules?
17. 17.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
18. 18.🏋️ A force of 70 N pushes a cart 8 m along the floor. How much work is done, in joules?
19. 19.🏋️ A force of 220 N pushes a cart 8 m along the floor. How much work is done, in joules?
20. 20.🏋️ A force of 210 N did 1680 J of work. How many metres did the object move?
21. 21.🏋️ Pushing a crate 1 m took 380 J of work. What force was used, in newtons?
22. 22.🏋️ A force of 230 N pushes a cart 3 m along the floor. How much work is done, in joules?
23. 23.🏋️ A force of 80 N did 800 J of work. How many metres did the object move?
24. 24.🏋️ A force of 250 N did 750 J of work. How many metres did the object move?
25. 25.🏋️ A force of 340 N pushes a cart 9 m along the floor. How much work is done, in joules?
26. 26.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
28. 28.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ A 15 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
30. 30.🏋️ A force of 200 N did 1400 J of work. How many metres did the object move?
31. 31.🏋️ Pushing a crate 1 m took 470 J of work. What force was used, in newtons?
32. 32.🏋️ Pushing a crate 7 m took 2800 J of work. What force was used, in newtons?
33. 33.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) less effort (d) the same effort
34. 34.🏋️ A machine lifts a load of 240 N when you push with 60 N. What is its mechanical advantage (MA)?
35. 35.🏋️ Pushing a crate 7 m took 2520 J of work. What force was used, in newtons?
36. 36.🏋️ A machine lifts a load of 320 N when you push with 160 N. What is its mechanical advantage (MA)?
37. 37.🏋️ Pushing a crate 1 m took 210 J of work. What force was used, in newtons?
38. 38.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A machine lifts a load of 1080 N when you push with 180 N. What is its mechanical advantage (MA)?
40. 40.🏋️ A 1 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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