Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 422 · 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 350 N pushes a cart 2 m along the floor. How much work is done, in joules?
2. 2.🏋️ A force of 210 N pushes a cart 5 m along the floor. How much work is done, in joules?
3. 3.🏋️ A 16 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
4. 4.🏋️ A 15 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 smooth ramp is 4 m long and rises 2 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
6. 6.🏋️ A machine lifts a load of 800 N when you push with 160 N. What is its mechanical advantage (MA)?
7. 7.🏋️ Work is done when a force moves something … (a) very slowly (b) through a distance (c) only upwards (d) without moving it
8. 8.🏋️ A 13 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
9. 9.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) yes, by half (d) no, work stays the same
10. 10.🏋️ A force of 160 N did 960 J of work. How many metres did the object move?
11. 11.🏋️ A force of 360 N did 2160 J of work. How many metres did the object move?
12. 12.🏋️ A force of 180 N pushes a cart 8 m along the floor. How much work is done, in joules?
13. 13.🏋️ A machine lifts a load of 160 N when you push with 80 N. What is its mechanical advantage (MA)?
14. 14.🏋️ A force of 310 N did 930 J of work. How many metres did the object move?
15. 15.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
16. 16.🏋️ A longer ramp to the same height needs … (a) the same effort (b) no effort (c) more effort (d) less effort
17. 17.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load × effort (d) load ÷ effort
18. 18.🏋️ A 3 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 smooth ramp is 2 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
20. 20.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) newton (N) (d) metre (m)
21. 21.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
22. 22.🏋️ Pushing a crate 9 m took 4050 J of work. What force was used, in newtons?
23. 23.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 700 N box up it, in newtons? (ideal ramp, no friction)
24. 24.🏋️ A machine lifts a load of 150 N when you push with 30 N. What is its mechanical advantage (MA)?
25. 25.🏋️ 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?
26. 26.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
27. 27.🏋️ A force of 90 N pushes a cart 10 m along the floor. How much work is done, in joules?
28. 28.🏋️ A force of 290 N did 1740 J of work. How many metres did the object move?
29. 29.🏋️ Pushing a crate 10 m took 4200 J of work. What force was used, in newtons?
30. 30.🏋️ Pushing a crate 1 m took 150 J of work. What force was used, in newtons?
31. 31.🏋️ A force of 150 N pushes a cart 4 m along the floor. How much work is done, in joules?
32. 32.🏋️ A force of 370 N pushes a cart 1 m along the floor. How much work is done, in joules?
33. 33.🏋️ A force of 50 N pushes a cart 3 m along the floor. How much work is done, in joules?
34. 34.🏋️ A force of 210 N pushes a cart 2 m along the floor. How much work is done, in joules?
35. 35.🏋️ A force of 340 N did 2380 J of work. How many metres did the object move?
36. 36.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
37. 37.🏋️ A machine lifts a load of 80 N when you push with 20 N. What is its mechanical advantage (MA)?
38. 38.🏋️ Pushing a crate 7 m took 2870 J of work. What force was used, in newtons?
39. 39.🏋️ A force of 480 N did 3840 J of work. How many metres did the object move?
40. 40.🏋️ Pushing a crate 2 m took 900 J of work. What force was used, in newtons?

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