Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 504 · 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.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
2. 2.🏋️ 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?
3. 3.🏋️ A longer ramp to the same height needs … (a) less effort (b) no effort (c) the same effort (d) more effort
4. 4.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
5. 5.🏋️ Pushing a crate 8 m took 3680 J of work. What force was used, in newtons?
6. 6.🏋️ A force of 450 N pushes a cart 1 m along the floor. How much work is done, in joules?
7. 7.🏋️ Pushing a crate 2 m took 760 J of work. What force was used, in newtons?
8. 8.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
9. 9.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
10. 10.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
11. 11.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
12. 12.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1050 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🏋️ A force of 40 N did 160 J of work. How many metres did the object move?
14. 14.🏋️ A force of 80 N pushes a cart 3 m along the floor. How much work is done, in joules?
15. 15.🏋️ A force of 390 N did 3120 J of work. How many metres did the object move?
16. 16.🏋️ A force of 150 N pushes a cart 4 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 450 N pushes a cart 9 m along the floor. How much work is done, in joules?
18. 18.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
19. 19.🏋️ A force of 330 N pushes a cart 7 m along the floor. How much work is done, in joules?
20. 20.🏋️ A force of 210 N pushes a cart 1 m along the floor. How much work is done, in joules?
21. 21.🏋️ A force of 350 N pushes a cart 3 m along the floor. How much work is done, in joules?
22. 22.🏋️ A machine lifts a load of 60 N when you push with 20 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1100 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) watt hour (d) newton (N)
25. 25.🏋️ Pushing a crate 1 m took 320 J of work. What force was used, in newtons?
26. 26.🏋️ Pushing a crate 3 m took 1500 J of work. What force was used, in newtons?
27. 27.🏋️ A force of 290 N pushes a cart 8 m along the floor. How much work is done, in joules?
28. 28.🏋️ A machine lifts a load of 40 N when you push with 10 N. What is its mechanical advantage (MA)?
29. 29.🏋️ A force of 20 N pushes a cart 9 m along the floor. How much work is done, in joules?
30. 30.🏋️ A machine lifts a load of 480 N when you push with 120 N. What is its mechanical advantage (MA)?
31. 31.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
32. 32.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
33. 33.🏋️ A force of 150 N pushes a cart 6 m along the floor. How much work is done, in joules?
34. 34.🏋️ A machine lifts a load of 1140 N when you push with 190 N. What is its mechanical advantage (MA)?
35. 35.🏋️ A 9 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.🏋️ A force of 180 N pushes a cart 2 m along the floor. How much work is done, in joules?
39. 39.🏋️ Pushing a crate 5 m took 2400 J of work. What force was used, in newtons?
40. 40.🏋️ 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)

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