Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 397 · 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 480 N pushes a cart 6 m along the floor. How much work is done, in joules?
2. 2.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) without moving it (d) through a distance
3. 3.🏋️ A machine lifts a load of 150 N when you push with 50 N. What is its mechanical advantage (MA)?
4. 4.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
5. 5.🏋️ In which unit is work measured? (a) joule (J) (b) newton (N) (c) metre (m) (d) watt hour
6. 6.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
7. 7.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
8. 8.🏋️ A force of 140 N pushes a cart 7 m along the floor. How much work is done, in joules?
9. 9.🏋️ A force of 170 N pushes a cart 3 m along the floor. How much work is done, in joules?
10. 10.🏋️ A machine lifts a load of 180 N when you push with 90 N. What is its mechanical advantage (MA)?
11. 11.🏋️ 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)
12. 12.🏋️ A force of 120 N pushes a cart 2 m along the floor. How much work is done, in joules?
13. 13.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
14. 14.🏋️ A 14 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
15. 15.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
16. 16.🏋️ A machine lifts a load of 420 N when you push with 70 N. What is its mechanical advantage (MA)?
17. 17.🏋️ Pushing a crate 4 m took 440 J of work. What force was used, in newtons?
18. 18.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
19. 19.🏋️ Pushing a crate 1 m took 10 J of work. What force was used, in newtons?
20. 20.🏋️ A force of 60 N did 60 J of work. How many metres did the object move?
21. 21.🏋️ A machine lifts a load of 150 N when you push with 30 N. What is its mechanical advantage (MA)?
22. 22.🏋️ Pushing a crate 7 m took 2310 J of work. What force was used, in newtons?
23. 23.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
24. 24.🏋️ A force of 60 N pushes a cart 2 m along the floor. How much work is done, in joules?
25. 25.🏋️ A force of 380 N pushes a cart 9 m along the floor. How much work is done, in joules?
26. 26.🏋️ Pushing a crate 8 m took 240 J of work. What force was used, in newtons?
27. 27.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
28. 28.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
29. 29.🏋️ A force of 110 N pushes a cart 4 m along the floor. How much work is done, in joules?
30. 30.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
31. 31.🏋️ Pushing a crate 8 m took 1600 J of work. What force was used, in newtons?
32. 32.🏋️ 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)
33. 33.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
34. 34.🏋️ A force of 350 N pushes a cart 6 m along the floor. How much work is done, in joules?
35. 35.🏋️ A 2 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 320 N did 960 J of work. How many metres did the object move?
37. 37.🏋️ A force of 20 N pushes a cart 9 m along the floor. How much work is done, in joules?
38. 38.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1950 N box up it, in newtons? (ideal ramp, no friction)
39. 39.🏋️ A force of 450 N pushes a cart 9 m along the floor. How much work is done, in joules?
40. 40.🏋️ A force of 220 N pushes a cart 2 m along the floor. How much work is done, in joules?

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