Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 537 · 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.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
3. 3.🏋️ A 13 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ 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
5. 5.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ Pushing a crate 5 m took 1150 J of work. What force was used, in newtons?
7. 7.🏋️ Pushing a crate 2 m took 20 J of work. What force was used, in newtons?
8. 8.🏋️ A force of 420 N pushes a cart 5 m along the floor. How much work is done, in joules?
9. 9.🏋️ 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)
10. 10.🏋️ A force of 410 N did 2050 J of work. How many metres did the object move?
11. 11.🏋️ A force of 10 N pushes a cart 3 m along the floor. How much work is done, in joules?
12. 12.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?
13. 13.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
14. 14.🏋️ A force of 230 N pushes a cart 10 m along the floor. How much work is done, in joules?
15. 15.🏋️ 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)
16. 16.🏋️ A force of 60 N pushes a cart 9 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 220 N did 220 J of work. How many metres did the object move?
18. 18.🏋️ A force of 290 N pushes a cart 4 m along the floor. How much work is done, in joules?
19. 19.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) newton (N) (d) metre (m)
20. 20.🏋️ A force of 120 N pushes a cart 8 m along the floor. How much work is done, in joules?
21. 21.🏋️ Pushing a crate 6 m took 2100 J of work. What force was used, in newtons?
22. 22.🏋️ Pushing a crate 1 m took 390 J of work. What force was used, in newtons?
23. 23.🏋️ A force of 280 N did 1120 J of work. How many metres did the object move?
24. 24.🏋️ A force of 80 N pushes a cart 5 m along the floor. How much work is done, in joules?
25. 25.🏋️ A force of 280 N did 2800 J of work. How many metres did the object move?
26. 26.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 100 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ Pushing a crate 2 m took 460 J of work. What force was used, in newtons?
28. 28.🏋️ A force of 10 N did 20 J of work. How many metres did the object move?
29. 29.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ Pushing a crate 1 m took 20 J of work. What force was used, in newtons?
31. 31.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
32. 32.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
34. 34.🏋️ A force of 500 N pushes a cart 2 m along the floor. How much work is done, in joules?
35. 35.🏋️ A 1 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.🏋️ A force of 310 N pushes a cart 9 m along the floor. How much work is done, in joules?
37. 37.🏋️ Pushing a crate 6 m took 2160 J of work. What force was used, in newtons?
38. 38.🏋️ A 6 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
39. 39.🏋️ A 2 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
40. 40.🏋️ A machine lifts a load of 420 N when you push with 70 N. What is its mechanical advantage (MA)?

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