Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 581 · 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 310 N did 2790 J of work. How many metres did the object move?
2. 2.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
3. 3.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
5. 5.🏋️ A machine lifts a load of 120 N when you push with 20 N. What is its mechanical advantage (MA)?
6. 6.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
7. 7.🏋️ A force of 210 N did 1680 J of work. How many metres did the object move?
8. 8.🏋️ A force of 110 N did 1100 J of work. How many metres did the object move?
9. 9.🏋️ A force of 230 N pushes a cart 2 m along the floor. How much work is done, in joules?
10. 10.🏋️ A force of 130 N pushes a cart 10 m along the floor. How much work is done, in joules?
11. 11.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
12. 12.🏋️ 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
13. 13.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
14. 14.🏋️ A machine lifts a load of 400 N when you push with 80 N. What is its mechanical advantage (MA)?
15. 15.🏋️ A 10 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
16. 16.🏋️ A force of 430 N pushes a cart 1 m along the floor. How much work is done, in joules?
17. 17.🏋️ A force of 50 N pushes a cart 9 m along the floor. How much work is done, in joules?
18. 18.🏋️ A 3 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ Pushing a crate 6 m took 420 J of work. What force was used, in newtons?
20. 20.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) newton (N) (d) watt hour
21. 21.🏋️ A force of 260 N pushes a cart 6 m along the floor. How much work is done, in joules?
22. 22.🏋️ Pushing a crate 2 m took 240 J of work. What force was used, in newtons?
23. 23.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
25. 25.🏋️ A force of 120 N pushes a cart 10 m along the floor. How much work is done, in joules?
26. 26.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) less effort (d) more effort
27. 27.🏋️ A machine lifts a load of 720 N when you push with 180 N. What is its mechanical advantage (MA)?
28. 28.🏋️ Pushing a crate 1 m took 190 J of work. What force was used, in newtons?
29. 29.🏋️ A force of 280 N pushes a cart 4 m along the floor. How much work is done, in joules?
30. 30.🏋️ Pushing a crate 4 m took 2000 J of work. What force was used, in newtons?
31. 31.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
32. 32.🏋️ A machine lifts a load of 300 N when you push with 100 N. What is its mechanical advantage (MA)?
33. 33.🏋️ A 12 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ A force of 430 N did 3870 J of work. How many metres did the object move?
35. 35.🏋️ 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?
36. 36.🏋️ A force of 500 N pushes a cart 6 m along the floor. How much work is done, in joules?
37. 37.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ Pushing a crate 1 m took 330 J of work. What force was used, in newtons?
39. 39.🏋️ A force of 50 N pushes a cart 1 m along the floor. How much work is done, in joules?
40. 40.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)

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