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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 349 · 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 200 N did 400 J of work. How many metres did the object move?
  2. 2.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) less effort (d) no effort
  3. 3.🏋️ A force of 130 N did 130 J of work. How many metres did the object move?
  4. 4.🏋️ A force of 360 N did 360 J of work. How many metres did the object move?
  5. 5.🏋️ A machine lifts a load of 1000 N when you push with 200 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A force of 40 N did 360 J of work. How many metres did the object move?
  7. 7.🏋️ Pushing a crate 2 m took 600 J of work. What force was used, in newtons?
  8. 8.🏋️ Pushing a crate 8 m took 3200 J of work. What force was used, in newtons?
  9. 9.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 4750 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ Pushing a crate 6 m took 1380 J of work. What force was used, in newtons?
  11. 11.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  12. 12.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1650 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ 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)
  15. 15.🏋️ Pushing a crate 10 m took 4900 J of work. What force was used, in newtons?
  16. 16.🏋️ A 2 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  17. 17.🏋️ A force of 160 N did 1120 J of work. How many metres did the object move?
  18. 18.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ Pushing a crate 7 m took 280 J of work. What force was used, in newtons?
  20. 20.🏋️ A force of 60 N pushes a cart 4 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A force of 420 N did 3780 J of work. How many metres did the object move?
  22. 22.🏋️ Pushing a crate 10 m took 100 J of work. What force was used, in newtons?
  23. 23.🏋️ A force of 370 N pushes a cart 7 m along the floor. How much work is done, in joules?
  24. 24.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load ÷ effort (d) load + effort
  25. 25.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
  26. 26.🏋️ A machine lifts a load of 300 N when you push with 100 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A 12 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  28. 28.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  29. 29.🏋️ A machine lifts a load of 480 N when you push with 80 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ A force of 210 N did 2100 J of work. How many metres did the object move?
  31. 31.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  32. 32.🏋️ A force of 350 N did 700 J of work. How many metres did the object move?
  33. 33.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
  34. 34.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  35. 35.🏋️ A force of 500 N did 5000 J of work. How many metres did the object move?
  36. 36.🏋️ Pushing a crate 6 m took 1920 J of work. What force was used, in newtons?
  37. 37.🏋️ A force of 370 N pushes a cart 9 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A machine lifts a load of 150 N when you push with 30 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 390 N did 3510 J of work. How many metres did the object move?
  40. 40.🏋️ A machine lifts a load of 390 N when you push with 130 N. What is its mechanical advantage (MA)?

Answer key

  1. 2
  2. less effort
  3. 1
  4. 1
  5. 5
  6. 9
  7. 300
  8. 400
  9. 950
  10. 230
  11. 100
  12. 1000
  13. 550
  14. 850
  15. 490
  16. 20
  17. 7
  18. 200
  19. 40
  20. 240
  21. 9
  22. 10
  23. 2590
  24. load ÷ effort
  25. 4
  26. 3
  27. 240
  28. 750
  29. 6
  30. 10
  31. 250
  32. 2
  33. 2
  34. 200
  35. 10
  36. 320
  37. 3330
  38. 5
  39. 9
  40. 3

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