Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 826 · 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.🏋️ 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
2. 2.🏋️ A 5 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
3. 3.🏋️ Pushing a crate 6 m took 660 J of work. What force was used, in newtons?
4. 4.🏋️ Pushing a crate 2 m took 940 J of work. What force was used, in newtons?
5. 5.🏋️ A force of 160 N pushes a cart 4 m along the floor. How much work is done, in joules?
6. 6.🏋️ A 19 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
7. 7.🏋️ Pushing a crate 6 m took 3000 J of work. What force was used, in newtons?
8. 8.🏋️ A force of 230 N did 920 J of work. How many metres did the object move?
9. 9.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) watt hour (d) joule (J)
10. 10.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) without moving it (d) through a distance
11. 11.🏋️ A machine lifts a load of 340 N when you push with 170 N. What is its mechanical advantage (MA)?
12. 12.🏋️ A force of 480 N pushes a cart 3 m along the floor. How much work is done, in joules?
13. 13.🏋️ A force of 390 N pushes a cart 6 m along the floor. How much work is done, in joules?
14. 14.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A machine lifts a load of 650 N when you push with 130 N. What is its mechanical advantage (MA)?
16. 16.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
17. 17.🏋️ A force of 340 N pushes a cart 5 m along the floor. How much work is done, in joules?
18. 18.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
19. 19.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
20. 20.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 100 N box up it, in newtons? (ideal ramp, no friction)
21. 21.🏋️ A force of 310 N did 310 J of work. How many metres did the object move?
22. 22.🏋️ A force of 160 N did 1440 J of work. How many metres did the object move?
23. 23.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A machine lifts a load of 360 N when you push with 180 N. What is its mechanical advantage (MA)?
25. 25.🏋️ A force of 300 N pushes a cart 8 m along the floor. How much work is done, in joules?
26. 26.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ 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?
28. 28.🏋️ A force of 480 N did 1440 J of work. How many metres did the object move?
29. 29.🏋️ A force of 360 N pushes a cart 5 m along the floor. How much work is done, in joules?
30. 30.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ A machine lifts a load of 50 N when you push with 10 N. What is its mechanical advantage (MA)?
32. 32.🏋️ Pushing a crate 1 m took 210 J of work. What force was used, in newtons?
33. 33.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) effort ÷ load (d) load + effort
34. 34.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
35. 35.🏋️ A force of 280 N pushes a cart 4 m along the floor. How much work is done, in joules?
36. 36.🏋️ Pushing a crate 9 m took 1620 J of work. What force was used, in newtons?
37. 37.🏋️ A machine lifts a load of 480 N when you push with 160 N. What is its mechanical advantage (MA)?
38. 38.🏋️ Pushing a crate 10 m took 4900 J of work. What force was used, in newtons?
39. 39.🏋️ A machine lifts a load of 150 N when you push with 50 N. What is its mechanical advantage (MA)?
40. 40.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?

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