Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 44 · 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 smooth ramp is 10 m long and rises 2 m. What effort pushes a 4250 N box up it, in newtons? (ideal ramp, no friction)
2. 2.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) only on Mondays (c) yes, always (d) yes, by half
3. 3.🏋️ A machine lifts a load of 40 N when you push with 10 N. What is its mechanical advantage (MA)?
4. 4.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
5. 5.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) load + effort (d) effort ÷ load
6. 6.🏋️ Pushing a crate 7 m took 2030 J of work. What force was used, in newtons?
7. 7.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
8. 8.🏋️ A force of 90 N did 270 J of work. How many metres did the object move?
9. 9.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
10. 10.🏋️ A force of 310 N did 930 J of work. How many metres did the object move?
11. 11.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
12. 12.🏋️ A force of 280 N did 2520 J of work. How many metres did the object move?
13. 13.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
14. 14.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1750 N box up it, in newtons? (ideal ramp, no friction)
15. 15.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
16. 16.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
17. 17.🏋️ 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)
18. 18.🏋️ A 15 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.🏋️ A machine lifts a load of 240 N when you push with 40 N. What is its mechanical advantage (MA)?
20. 20.🏋️ A machine lifts a load of 50 N when you push with 10 N. What is its mechanical advantage (MA)?
21. 21.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) watt hour (d) metre (m)
22. 22.🏋️ A force of 80 N did 160 J of work. How many metres did the object move?
23. 23.🏋️ A force of 210 N did 1680 J of work. How many metres did the object move?
24. 24.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
25. 25.🏋️ A force of 470 N pushes a cart 7 m along the floor. How much work is done, in joules?
26. 26.🏋️ A force of 40 N did 200 J of work. How many metres did the object move?
27. 27.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
28. 28.🏋️ A force of 390 N pushes a cart 2 m along the floor. How much work is done, in joules?
29. 29.🏋️ Pushing a crate 8 m took 1360 J of work. What force was used, in newtons?
30. 30.🏋️ A machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
31. 31.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?
32. 32.🏋️ A force of 200 N pushes a cart 9 m along the floor. How much work is done, in joules?
33. 33.🏋️ A force of 440 N pushes a cart 7 m along the floor. How much work is done, in joules?
34. 34.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3750 N box up it, in newtons? (ideal ramp, no friction)
35. 35.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.🏋️ A force of 110 N pushes a cart 3 m along the floor. How much work is done, in joules?
37. 37.🏋️ A 5 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
38. 38.🏋️ 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?
39. 39.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
40. 40.🏋️ A force of 390 N did 1950 J of work. How many metres did the object move?

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