Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 773 · 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.🏋️ A force of 40 N did 240 J of work. How many metres did the object move?
2. 2.🏋️ A 14 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
3. 3.🏋️ A machine lifts a load of 510 N when you push with 170 N. What is its mechanical advantage (MA)?
4. 4.🏋️ A force of 50 N did 400 J of work. How many metres did the object move?
5. 5.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5700 N box up it, in newtons? (ideal ramp, no friction)
7. 7.🏋️ A force of 80 N did 560 J of work. How many metres did the object move?
8. 8.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) no effort (d) less effort
9. 9.🏋️ Pushing a crate 6 m took 660 J of work. What force was used, in newtons?
10. 10.🏋️ A force of 310 N pushes a cart 1 m along the floor. How much work is done, in joules?
11. 11.🏋️ A force of 310 N did 1860 J of work. How many metres did the object move?
12. 12.🏋️ A 10 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏋️ Pushing a crate 4 m took 1880 J of work. What force was used, in newtons?
14. 14.🏋️ Work is done when a force moves something … (a) only upwards (b) through a distance (c) very slowly (d) without moving it
15. 15.🏋️ A force of 270 N pushes a cart 6 m along the floor. How much work is done, in joules?
16. 16.🏋️ A force of 240 N pushes a cart 1 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 60 N pushes a cart 7 m along the floor. How much work is done, in joules?
18. 18.🏋️ 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)
19. 19.🏋️ A force of 30 N pushes a cart 2 m along the floor. How much work is done, in joules?
20. 20.🏋️ 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
21. 21.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) newton (N) (d) watt hour
22. 22.🏋️ A 4 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.🏋️ A force of 150 N pushes a cart 2 m along the floor. How much work is done, in joules?
24. 24.🏋️ 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?
25. 25.🏋️ A machine lifts a load of 680 N when you push with 170 N. What is its mechanical advantage (MA)?
26. 26.🏋️ A force of 10 N did 30 J of work. How many metres did the object move?
27. 27.🏋️ A force of 270 N pushes a cart 8 m along the floor. How much work is done, in joules?
28. 28.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
29. 29.🏋️ A 16 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
30. 30.🏋️ A force of 110 N pushes a cart 10 m along the floor. How much work is done, in joules?
31. 31.🏋️ A force of 120 N pushes a cart 1 m along the floor. How much work is done, in joules?
32. 32.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ An 8 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ A machine lifts a load of 360 N when you push with 180 N. What is its mechanical advantage (MA)?
35. 35.🏋️ A force of 420 N pushes a cart 8 m along the floor. How much work is done, in joules?
36. 36.🏋️ A force of 430 N pushes a cart 1 m along the floor. How much work is done, in joules?
37. 37.🏋️ Pushing a crate 3 m took 1260 J of work. What force was used, in newtons?
38. 38.🏋️ A force of 330 N did 2640 J of work. How many metres did the object move?
39. 39.🏋️ An 18 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 2 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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