Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 944 · 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 force of 10 N did 80 J of work. How many metres did the object move?
3. 3.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ 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?
5. 5.🏋️ A force of 490 N pushes a cart 7 m along the floor. How much work is done, in joules?
6. 6.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
7. 7.🏋️ A machine lifts a load of 320 N when you push with 160 N. What is its mechanical advantage (MA)?
8. 8.🏋️ A machine lifts a load of 80 N when you push with 40 N. What is its mechanical advantage (MA)?
9. 9.🏋️ A force of 370 N pushes a cart 6 m along the floor. How much work is done, in joules?
10. 10.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
11. 11.🏋️ Pushing a crate 5 m took 100 J of work. What force was used, in newtons?
12. 12.🏋️ A force of 70 N pushes a cart 9 m along the floor. How much work is done, in joules?
13. 13.🏋️ A force of 70 N pushes a cart 3 m along the floor. How much work is done, in joules?
14. 14.🏋️ A force of 50 N pushes a cart 2 m along the floor. How much work is done, in joules?
15. 15.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, always (d) yes, by half
16. 16.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ A 14 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.🏋️ Pushing a crate 5 m took 1450 J of work. What force was used, in newtons?
19. 19.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
20. 20.🏋️ A force of 10 N pushes a cart 1 m along the floor. How much work is done, in joules?
21. 21.🏋️ A force of 260 N did 260 J of work. How many metres did the object move?
22. 22.🏋️ Pushing a crate 2 m took 880 J of work. What force was used, in newtons?
23. 23.🏋️ A machine lifts a load of 280 N when you push with 140 N. What is its mechanical advantage (MA)?
24. 24.🏋️ A force of 290 N did 1450 J of work. How many metres did the object move?
25. 25.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4250 N box up it, in newtons? (ideal ramp, no friction)
26. 26.🏋️ Pushing a crate 5 m took 2000 J of work. What force was used, in newtons?
27. 27.🏋️ Pushing a crate 1 m took 240 J of work. What force was used, in newtons?
28. 28.🏋️ A force of 390 N pushes a cart 7 m along the floor. How much work is done, in joules?
29. 29.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
30. 30.🏋️ A force of 250 N pushes a cart 8 m along the floor. How much work is done, in joules?
31. 31.🏋️ A force of 470 N pushes a cart 2 m along the floor. How much work is done, in joules?
32. 32.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1050 N box up it, in newtons? (ideal ramp, no friction)
33. 33.🏋️ A force of 50 N did 50 J of work. How many metres did the object move?
34. 34.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
35. 35.🏋️ 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?
36. 36.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
37. 37.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1900 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ A 9 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 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)
40. 40.🏋️ A machine lifts a load of 640 N when you push with 160 N. What is its mechanical advantage (MA)?

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