Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 824 · 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 smooth ramp is 15 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🏋️ A machine lifts a load of 680 N when you push with 170 N. What is its mechanical advantage (MA)?
3. 3.🏋️ Pushing a crate 1 m took 440 J of work. What force was used, in newtons?
4. 4.🏋️ An 8 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
5. 5.🏋️ A force of 360 N pushes a cart 2 m along the floor. How much work is done, in joules?
6. 6.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) no effort (d) more effort
7. 7.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
8. 8.🏋️ A force of 50 N did 200 J of work. How many metres did the object move?
9. 9.🏋️ A force of 110 N pushes a cart 10 m along the floor. How much work is done, in joules?
10. 10.🏋️ A force of 330 N did 3300 J of work. How many metres did the object move?
11. 11.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
12. 12.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
13. 13.🏋️ A force of 250 N pushes a cart 3 m along the floor. How much work is done, in joules?
14. 14.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
15. 15.🏋️ A force of 110 N did 990 J of work. How many metres did the object move?
16. 16.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4800 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
18. 18.🏋️ A 16 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ A force of 110 N pushes a cart 6 m along the floor. How much work is done, in joules?
20. 20.🏋️ Pushing a crate 2 m took 400 J of work. What force was used, in newtons?
21. 21.🏋️ A 3 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
22. 22.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
23. 23.🏋️ Pushing a crate 3 m took 390 J of work. What force was used, in newtons?
24. 24.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
25. 25.🏋️ A force of 250 N pushes a cart 7 m along the floor. How much work is done, in joules?
26. 26.🏋️ A 7 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
27. 27.🏋️ Pushing a crate 2 m took 520 J of work. What force was used, in newtons?
28. 28.🏋️ Pushing a crate 2 m took 640 J of work. What force was used, in newtons?
29. 29.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ Pushing a crate 7 m took 770 J of work. What force was used, in newtons?
31. 31.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 1800 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 700 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
34. 34.🏋️ A force of 60 N pushes a cart 4 m along the floor. How much work is done, in joules?
35. 35.🏋️ A force of 400 N pushes a cart 1 m along the floor. How much work is done, in joules?
36. 36.🏋️ A machine lifts a load of 180 N when you push with 60 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A force of 130 N did 780 J of work. How many metres did the object move?
38. 38.🏋️ Pushing a crate 8 m took 240 J of work. What force was used, in newtons?
39. 39.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) effort ÷ load (c) load + effort (d) load × effort
40. 40.🏋️ A 12 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

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