Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 3 · 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 450 N pushes a cart 10 m along the floor. How much work is done, in joules?
2. 2.🏋️ A force of 90 N pushes a cart 10 m along the floor. How much work is done, in joules?
3. 3.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
4. 4.🏋️ A force of 210 N pushes a cart 1 m along the floor. How much work is done, in joules?
5. 5.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
6. 6.🏋️ Pushing a crate 4 m took 560 J of work. What force was used, in newtons?
7. 7.🏋️ A force of 310 N did 930 J of work. How many metres did the object move?
8. 8.🏋️ A longer ramp to the same height needs … (a) less effort (b) the same effort (c) more effort (d) no effort
9. 9.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2750 N box up it, in newtons? (ideal ramp, no friction)
10. 10.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
11. 11.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
12. 12.🏋️ A force of 490 N did 2940 J of work. How many metres did the object move?
13. 13.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) load ÷ effort (d) effort ÷ load
14. 14.🏋️ A 5 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
15. 15.🏋️ A machine lifts a load of 80 N when you push with 20 N. What is its mechanical advantage (MA)?
16. 16.🏋️ Pushing a crate 7 m took 280 J of work. What force was used, in newtons?
17. 17.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) only upwards (d) through a distance
18. 18.🏋️ A 19 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
19. 19.🏋️ A force of 460 N pushes a cart 9 m along the floor. How much work is done, in joules?
20. 20.🏋️ Pushing a crate 6 m took 2880 J of work. What force was used, in newtons?
21. 21.🏋️ A force of 300 N pushes a cart 10 m along the floor. How much work is done, in joules?
22. 22.🏋️ A force of 270 N pushes a cart 1 m along the floor. How much work is done, in joules?
23. 23.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A force of 120 N pushes a cart 9 m along the floor. How much work is done, in joules?
25. 25.🏋️ 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?
26. 26.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
27. 27.🏋️ A force of 30 N pushes a cart 8 m along the floor. How much work is done, in joules?
28. 28.🏋️ Pushing a crate 8 m took 3040 J of work. What force was used, in newtons?
29. 29.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ A machine lifts a load of 760 N when you push with 190 N. What is its mechanical advantage (MA)?
31. 31.🏋️ 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?
32. 32.🏋️ Pushing a crate 1 m took 120 J of work. What force was used, in newtons?
33. 33.🏋️ A force of 30 N did 270 J of work. How many metres did the object move?
34. 34.🏋️ A force of 60 N pushes a cart 6 m along the floor. How much work is done, in joules?
35. 35.🏋️ 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)
36. 36.🏋️ A force of 60 N pushes a cart 8 m along the floor. How much work is done, in joules?
37. 37.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 4750 N box up it, in newtons? (ideal ramp, no friction)
38. 38.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) joule (J) (d) newton (N)
39. 39.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) no, work stays the same (d) yes, by half
40. 40.🏋️ A force of 500 N did 2000 J of work. How many metres did the object move?

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