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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 600 · 40 questions
TalentJR

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.

NameDateTime takenScore ___ / 40
  1. 1.🏋️ A force of 320 N did 2560 J of work. How many metres did the object move?
  2. 2.🏋️ A force of 30 N pushes a cart 8 m along the floor. How much work is done, in joules?
  3. 3.🏋️ Pushing a crate 10 m took 1100 J of work. What force was used, in newtons?
  4. 4.🏋️ Pushing a crate 10 m took 500 J of work. What force was used, in newtons?
  5. 5.🏋️ A machine lifts a load of 400 N when you push with 200 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A force of 250 N pushes a cart 10 m along the floor. How much work is done, in joules?
  7. 7.🏋️ A 9 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ A force of 470 N did 4700 J of work. How many metres did the object move?
  9. 9.🏋️ Pushing a crate 2 m took 100 J of work. What force was used, in newtons?
  10. 10.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
  11. 11.🏋️ A 7 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  12. 12.🏋️ A 20 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  13. 13.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) joule (J) (d) newton (N)
  14. 14.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
  15. 15.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A longer ramp to the same height needs … (a) no effort (b) less effort (c) more effort (d) the same effort
  17. 17.🏋️ 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?
  18. 18.🏋️ A force of 370 N pushes a cart 10 m along the floor. How much work is done, in joules?
  19. 19.🏋️ A force of 370 N pushes a cart 9 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A force of 280 N did 2520 J of work. How many metres did the object move?
  21. 21.🏋️ A force of 180 N pushes a cart 2 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A 2 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 240 N did 960 J of work. How many metres did the object move?
  24. 24.🏋️ A 2 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ Pushing a crate 9 m took 4230 J of work. What force was used, in newtons?
  26. 26.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
  28. 28.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
  29. 29.🏋️ 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?
  30. 30.🏋️ A force of 100 N did 200 J of work. How many metres did the object move?
  31. 31.🏋️ A force of 80 N pushes a cart 2 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ Pushing a crate 8 m took 1280 J of work. What force was used, in newtons?
  34. 34.🏋️ Pushing a crate 1 m took 240 J of work. What force was used, in newtons?
  35. 35.🏋️ A machine lifts a load of 210 N when you push with 70 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A force of 460 N pushes a cart 10 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A force of 50 N did 50 J of work. How many metres did the object move?
  40. 40.🏋️ A machine lifts a load of 600 N when you push with 150 N. What is its mechanical advantage (MA)?

Answer key

  1. 8
  2. 240
  3. 110
  4. 50
  5. 2
  6. 2500
  7. 450
  8. 10
  9. 50
  10. 2
  11. 280
  12. 600
  13. joule (J)
  14. 2
  15. 100
  16. less effort
  17. 180
  18. 3700
  19. 3330
  20. 9
  21. 360
  22. 100
  23. 4
  24. 40
  25. 470
  26. 600
  27. through a distance
  28. load ÷ effort
  29. 100
  30. 2
  31. 160
  32. 180
  33. 160
  34. 240
  35. 3
  36. 700
  37. 500
  38. 4600
  39. 1
  40. 4

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