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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 640 · 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 110 N did 440 J of work. How many metres did the object move?
  2. 2.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ In which unit is work measured? (a) joule (J) (b) newton (N) (c) metre (m) (d) watt hour
  4. 4.🏋️ Pushing a crate 4 m took 360 J of work. What force was used, in newtons?
  5. 5.🏋️ Pushing a crate 3 m took 30 J of work. What force was used, in newtons?
  6. 6.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ A force of 390 N did 3900 J of work. How many metres did the object move?
  9. 9.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  10. 10.🏋️ A force of 220 N pushes a cart 1 m along the floor. How much work is done, in joules?
  11. 11.🏋️ A longer ramp to the same height needs … (a) less effort (b) no effort (c) the same effort (d) more effort
  12. 12.🏋️ A force of 310 N pushes a cart 9 m along the floor. How much work is done, in joules?
  13. 13.🏋️ 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)
  14. 14.🏋️ A force of 220 N did 1980 J of work. How many metres did the object move?
  15. 15.🏋️ A machine lifts a load of 440 N when you push with 110 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1650 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ 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?
  18. 18.🏋️ Pushing a crate 6 m took 1200 J of work. What force was used, in newtons?
  19. 19.🏋️ Pushing a crate 6 m took 60 J of work. What force was used, in newtons?
  20. 20.🏋️ A force of 60 N pushes a cart 7 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A force of 10 N did 100 J of work. How many metres did the object move?
  22. 22.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A force of 80 N pushes a cart 5 m along the floor. How much work is done, in joules?
  24. 24.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 450 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ A force of 460 N did 2300 J of work. How many metres did the object move?
  26. 26.🏋️ A force of 470 N pushes a cart 4 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A force of 260 N pushes a cart 2 m along the floor. How much work is done, in joules?
  28. 28.🏋️ Pushing a crate 3 m took 450 J of work. What force was used, in newtons?
  29. 29.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
  30. 30.🏋️ A force of 260 N did 1820 J of work. How many metres did the object move?
  31. 31.🏋️ A force of 290 N did 2320 J of work. How many metres did the object move?
  32. 32.🏋️ A 10 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ A force of 390 N did 2730 J of work. How many metres did the object move?
  34. 34.🏋️ A force of 500 N did 3500 J of work. How many metres did the object move?
  35. 35.🏋️ Pushing a crate 6 m took 1320 J of work. What force was used, in newtons?
  36. 36.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1000 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 1350 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A machine lifts a load of 600 N when you push with 100 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ Pushing a crate 2 m took 400 J of work. What force was used, in newtons?
  40. 40.🏋️ Pushing a crate 1 m took 420 J of work. What force was used, in newtons?

Answer key

  1. 4
  2. 350
  3. joule (J)
  4. 90
  5. 10
  6. 850
  7. 70
  8. 10
  9. 20
  10. 220
  11. less effort
  12. 2790
  13. 50
  14. 9
  15. 4
  16. 550
  17. 110
  18. 200
  19. 10
  20. 420
  21. 10
  22. 1000
  23. 400
  24. 150
  25. 5
  26. 1880
  27. 520
  28. 150
  29. load ÷ effort
  30. 7
  31. 8
  32. 100
  33. 7
  34. 7
  35. 220
  36. 200
  37. 450
  38. 6
  39. 200
  40. 420

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