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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 411 · 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.🏋️ Pushing a crate 5 m took 200 J of work. What force was used, in newtons?
  2. 2.🏋️ A machine lifts a load of 780 N when you push with 130 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ Pushing a crate 5 m took 2500 J of work. What force was used, in newtons?
  4. 4.🏋️ A force of 40 N pushes a cart 4 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) no effort (d) less effort
  6. 6.🏋️ Pushing a crate 9 m took 3060 J of work. What force was used, in newtons?
  7. 7.🏋️ 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?
  8. 8.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ Pushing a crate 4 m took 1160 J of work. What force was used, in newtons?
  10. 10.🏋️ Pushing a crate 2 m took 740 J of work. What force was used, in newtons?
  11. 11.🏋️ Pushing a crate 9 m took 2250 J of work. What force was used, in newtons?
  12. 12.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2800 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A force of 490 N did 1960 J of work. How many metres did the object move?
  14. 14.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) very slowly (d) through a distance
  15. 15.🏋️ In which unit is work measured? (a) joule (J) (b) newton (N) (c) watt hour (d) metre (m)
  16. 16.🏋️ Pushing a crate 9 m took 2970 J of work. What force was used, in newtons?
  17. 17.🏋️ Pushing a crate 8 m took 880 J of work. What force was used, in newtons?
  18. 18.🏋️ A force of 130 N pushes a cart 2 m along the floor. How much work is done, in joules?
  19. 19.🏋️ A force of 350 N did 350 J of work. How many metres did the object move?
  20. 20.🏋️ 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?
  21. 21.🏋️ Pushing a crate 7 m took 1890 J of work. What force was used, in newtons?
  22. 22.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A 9 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ Pushing a crate 7 m took 3500 J of work. What force was used, in newtons?
  25. 25.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
  26. 26.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A force of 70 N pushes a cart 2 m along the floor. How much work is done, in joules?
  28. 28.🏋️ Pushing a crate 1 m took 390 J of work. What force was used, in newtons?
  29. 29.🏋️ A force of 210 N did 210 J of work. How many metres did the object move?
  30. 30.🏋️ A 3 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  31. 31.🏋️ Pushing a crate 9 m took 1980 J of work. What force was used, in newtons?
  32. 32.🏋️ A force of 430 N did 860 J of work. How many metres did the object move?
  33. 33.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) effort ÷ load (c) load × effort (d) load + effort
  34. 34.🏋️ A force of 310 N did 2480 J of work. How many metres did the object move?
  35. 35.🏋️ A machine lifts a load of 840 N when you push with 140 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ Pushing a crate 10 m took 4500 J of work. What force was used, in newtons?
  37. 37.🏋️ 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?
  38. 38.🏋️ A force of 70 N pushes a cart 3 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A force of 490 N did 490 J of work. How many metres did the object move?
  40. 40.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)

Answer key

  1. 40
  2. 6
  3. 500
  4. 160
  5. less effort
  6. 340
  7. 100
  8. 3
  9. 290
  10. 370
  11. 250
  12. 700
  13. 4
  14. through a distance
  15. joule (J)
  16. 330
  17. 110
  18. 260
  19. 1
  20. 180
  21. 270
  22. 750
  23. 90
  24. 500
  25. 600
  26. 3
  27. 140
  28. 390
  29. 1
  30. 60
  31. 220
  32. 2
  33. load ÷ effort
  34. 8
  35. 6
  36. 450
  37. 110
  38. 210
  39. 1
  40. 200

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