Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 513 · 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.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) very slowly (d) only upwards
2. 2.🏋️ A force of 460 N pushes a cart 9 m along the floor. How much work is done, in joules?
3. 3.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) joule (J) (d) watt hour
4. 4.🏋️ Pushing a crate 9 m took 3060 J of work. What force was used, in newtons?
5. 5.🏋️ A force of 170 N did 340 J of work. How many metres did the object move?
6. 6.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) less effort (d) more effort
7. 7.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
8. 8.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
9. 9.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
10. 10.🏋️ Pushing a crate 2 m took 160 J of work. What force was used, in newtons?
11. 11.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
12. 12.🏋️ 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)
13. 13.🏋️ A force of 50 N did 100 J of work. How many metres did the object move?
14. 14.🏋️ A force of 230 N pushes a cart 1 m along the floor. How much work is done, in joules?
15. 15.🏋️ A machine lifts a load of 750 N when you push with 150 N. What is its mechanical advantage (MA)?
16. 16.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
17. 17.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
18. 18.🏋️ 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)
19. 19.🏋️ A force of 140 N pushes a cart 5 m along the floor. How much work is done, in joules?
20. 20.🏋️ Pushing a crate 5 m took 1500 J of work. What force was used, in newtons?
21. 21.🏋️ A force of 430 N pushes a cart 7 m along the floor. How much work is done, in joules?
22. 22.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
23. 23.🏋️ A force of 440 N pushes a cart 5 m along the floor. How much work is done, in joules?
24. 24.🏋️ A force of 490 N pushes a cart 2 m along the floor. How much work is done, in joules?
25. 25.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
26. 26.🏋️ A force of 250 N pushes a cart 5 m along the floor. How much work is done, in joules?
27. 27.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) only on Mondays (c) no, work stays the same (d) yes, always
28. 28.🏋️ A force of 460 N pushes a cart 2 m along the floor. How much work is done, in joules?
29. 29.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
30. 30.🏋️ Pushing a crate 4 m took 80 J of work. What force was used, in newtons?
31. 31.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4800 N box up it, in newtons? (ideal ramp, no friction)
32. 32.🏋️ Pushing a crate 3 m took 180 J of work. What force was used, in newtons?
33. 33.🏋️ A 1 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
34. 34.🏋️ A force of 90 N did 900 J of work. How many metres did the object move?
35. 35.🏋️ A 6 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
36. 36.🏋️ A force of 70 N pushes a cart 9 m along the floor. How much work is done, in joules?
37. 37.🏋️ A force of 130 N did 1170 J of work. How many metres did the object move?
38. 38.🏋️ An 11 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 force of 310 N did 930 J of work. How many metres did the object move?
40. 40.🏋️ Pushing a crate 9 m took 3600 J of work. What force was used, in newtons?

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids