Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 611 · 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 10 m took 1700 J of work. What force was used, in newtons?
2. 2.🏋️ A force of 360 N did 3600 J of work. How many metres did the object move?
3. 3.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
4. 4.🏋️ A force of 170 N did 1700 J of work. How many metres did the object move?
5. 5.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ Pushing a crate 5 m took 1550 J of work. What force was used, in newtons?
7. 7.🏋️ A force of 150 N pushes a cart 5 m along the floor. How much work is done, in joules?
8. 8.🏋️ A machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
9. 9.🏋️ Pushing a crate 1 m took 470 J of work. What force was used, in newtons?
10. 10.🏋️ A force of 310 N did 1240 J of work. How many metres did the object move?
11. 11.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
12. 12.🏋️ 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?
13. 13.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
14. 14.🏋️ An 11 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
15. 15.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) no, work stays the same (d) yes, by half
16. 16.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
17. 17.🏋️ A 13 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.🏋️ A machine lifts a load of 280 N when you push with 140 N. What is its mechanical advantage (MA)?
19. 19.🏋️ A force of 150 N pushes a cart 8 m along the floor. How much work is done, in joules?
20. 20.🏋️ A 4 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
21. 21.🏋️ A force of 190 N did 570 J of work. How many metres did the object move?
22. 22.🏋️ A machine lifts a load of 760 N when you push with 190 N. What is its mechanical advantage (MA)?
23. 23.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
24. 24.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2750 N box up it, in newtons? (ideal ramp, no friction)
25. 25.🏋️ A 19 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.🏋️ Pushing a crate 3 m took 390 J of work. What force was used, in newtons?
27. 27.🏋️ A force of 370 N pushes a cart 7 m along the floor. How much work is done, in joules?
28. 28.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ A force of 120 N pushes a cart 8 m along the floor. How much work is done, in joules?
31. 31.🏋️ 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?
32. 32.🏋️ A force of 230 N pushes a cart 3 m along the floor. How much work is done, in joules?
33. 33.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
34. 34.🏋️ A machine lifts a load of 600 N when you push with 120 N. What is its mechanical advantage (MA)?
35. 35.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) less effort (d) more effort
36. 36.🏋️ A force of 400 N did 3600 J of work. How many metres did the object move?
37. 37.🏋️ Pushing a crate 1 m took 300 J of work. What force was used, in newtons?
38. 38.🏋️ A force of 70 N pushes a cart 2 m along the floor. How much work is done, in joules?
39. 39.🏋️ A force of 100 N did 400 J of work. How many metres did the object move?
40. 40.🏋️ Pushing a crate 3 m took 960 J of work. What force was used, in newtons?

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