Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 796 · 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 3 m took 1500 J of work. What force was used, in newtons?
2. 2.🏋️ Pushing a crate 5 m took 250 J of work. What force was used, in newtons?
3. 3.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) only on Mondays (d) yes, by half
4. 4.🏋️ A force of 30 N pushes a cart 2 m along the floor. How much work is done, in joules?
5. 5.🏋️ A force of 270 N pushes a cart 8 m along the floor. How much work is done, in joules?
6. 6.🏋️ 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?
7. 7.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) joule (J) (d) watt hour
8. 8.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
9. 9.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
10. 10.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) less effort (d) the same effort
11. 11.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
12. 12.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
13. 13.🏋️ A force of 250 N did 2500 J of work. How many metres did the object move?
14. 14.🏋️ A force of 380 N pushes a cart 9 m along the floor. How much work is done, in joules?
15. 15.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
16. 16.🏋️ Pushing a crate 3 m took 870 J of work. What force was used, in newtons?
17. 17.🏋️ A force of 200 N pushes a cart 5 m along the floor. How much work is done, in joules?
18. 18.🏋️ A force of 200 N did 2000 J of work. How many metres did the object move?
19. 19.🏋️ 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)
20. 20.🏋️ 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?
21. 21.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
22. 22.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
23. 23.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) very slowly (d) through a distance
24. 24.🏋️ A force of 70 N pushes a cart 9 m along the floor. How much work is done, in joules?
25. 25.🏋️ Pushing a crate 1 m took 290 J of work. What force was used, in newtons?
26. 26.🏋️ A force of 30 N pushes a cart 10 m along the floor. How much work is done, in joules?
27. 27.🏋️ A force of 460 N pushes a cart 10 m along the floor. How much work is done, in joules?
28. 28.🏋️ A force of 30 N did 90 J of work. How many metres did the object move?
29. 29.🏋️ Pushing a crate 8 m took 880 J of work. What force was used, in newtons?
30. 30.🏋️ A force of 20 N did 40 J of work. How many metres did the object move?
31. 31.🏋️ A force of 250 N pushes a cart 3 m along the floor. How much work is done, in joules?
32. 32.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
33. 33.🏋️ A force of 260 N pushes a cart 4 m along the floor. How much work is done, in joules?
34. 34.🏋️ 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?
35. 35.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
36. 36.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1900 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ A force of 240 N pushes a cart 10 m along the floor. How much work is done, in joules?
39. 39.🏋️ A 17 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
40. 40.🏋️ A machine lifts a load of 150 N when you push with 50 N. What is its mechanical advantage (MA)?

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