Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 523 · 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 did 1400 J of work. How many metres did the object move?
2. 2.🏋️ A force of 130 N pushes a cart 4 m along the floor. How much work is done, in joules?
3. 3.🏋️ A force of 70 N did 630 J of work. How many metres did the object move?
4. 4.🏋️ A machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
5. 5.🏋️ A force of 80 N did 160 J of work. How many metres did the object move?
6. 6.🏋️ A force of 150 N did 450 J of work. How many metres did the object move?
7. 7.🏋️ A force of 430 N did 3870 J of work. How many metres did the object move?
8. 8.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
9. 9.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
10. 10.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
11. 11.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, by half (c) no, work stays the same (d) yes, always
12. 12.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
13. 13.🏋️ Pushing a crate 8 m took 1600 J of work. What force was used, in newtons?
14. 14.🏋️ An 18 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 force of 240 N pushes a cart 4 m along the floor. How much work is done, in joules?
16. 16.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) more effort (d) no effort
17. 17.🏋️ A 7 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
18. 18.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
19. 19.🏋️ A force of 390 N did 1170 J of work. How many metres did the object move?
20. 20.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
21. 21.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
22. 22.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
23. 23.🏋️ A force of 170 N pushes a cart 2 m along the floor. How much work is done, in joules?
24. 24.🏋️ A force of 150 N pushes a cart 2 m along the floor. How much work is done, in joules?
25. 25.🏋️ A force of 100 N pushes a cart 6 m along the floor. How much work is done, in joules?
26. 26.🏋️ A 4 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
27. 27.🏋️ A force of 230 N pushes a cart 1 m along the floor. How much work is done, in joules?
28. 28.🏋️ A machine lifts a load of 150 N when you push with 50 N. What is its mechanical advantage (MA)?
29. 29.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
30. 30.🏋️ 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)
31. 31.🏋️ A force of 30 N pushes a cart 7 m along the floor. How much work is done, in joules?
32. 32.🏋️ Pushing a crate 6 m took 2340 J of work. What force was used, in newtons?
33. 33.🏋️ A force of 140 N pushes a cart 8 m along the floor. How much work is done, in joules?
34. 34.🏋️ An 11 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
35. 35.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.🏋️ A machine lifts a load of 900 N when you push with 180 N. What is its mechanical advantage (MA)?
37. 37.🏋️ A force of 20 N pushes a cart 8 m along the floor. How much work is done, in joules?
38. 38.🏋️ Pushing a crate 2 m took 140 J of work. What force was used, in newtons?
39. 39.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
40. 40.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?

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