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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 367 · 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 500 N pushes a cart 6 m along the floor. How much work is done, in joules?
  2. 2.🏋️ A machine lifts a load of 300 N when you push with 150 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ Pushing a crate 3 m took 840 J of work. What force was used, in newtons?
  4. 4.🏋️ A force of 40 N did 160 J of work. How many metres did the object move?
  5. 5.🏋️ A force of 340 N pushes a cart 4 m along the floor. How much work is done, in joules?
  6. 6.🏋️ A force of 350 N did 350 J of work. How many metres did the object move?
  7. 7.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
  8. 8.🏋️ Pushing a crate 2 m took 480 J of work. What force was used, in newtons?
  9. 9.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) watt hour (d) joule (J)
  10. 10.🏋️ A force of 150 N pushes a cart 2 m along the floor. How much work is done, in joules?
  11. 11.🏋️ 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?
  12. 12.🏋️ A force of 300 N did 3000 J of work. How many metres did the object move?
  13. 13.🏋️ A machine lifts a load of 150 N when you push with 50 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ Pushing a crate 4 m took 400 J of work. What force was used, in newtons?
  15. 15.🏋️ A force of 260 N pushes a cart 10 m along the floor. How much work is done, in joules?
  16. 16.🏋️ Pushing a crate 1 m took 170 J of work. What force was used, in newtons?
  17. 17.🏋️ A machine lifts a load of 840 N when you push with 140 N. What is its mechanical advantage (MA)?
  18. 18.🏋️ Pushing a crate 2 m took 380 J of work. What force was used, in newtons?
  19. 19.🏋️ A force of 230 N did 230 J of work. How many metres did the object move?
  20. 20.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A machine lifts a load of 390 N when you push with 130 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ Pushing a crate 3 m took 180 J of work. What force was used, in newtons?
  24. 24.🏋️ Pushing a crate 7 m took 1190 J of work. What force was used, in newtons?
  25. 25.🏋️ A force of 20 N did 100 J of work. How many metres did the object move?
  26. 26.🏋️ Pushing a crate 4 m took 440 J of work. What force was used, in newtons?
  27. 27.🏋️ Pushing a crate 6 m took 2400 J of work. What force was used, in newtons?
  28. 28.🏋️ Pushing a crate 2 m took 540 J of work. What force was used, in newtons?
  29. 29.🏋️ A machine lifts a load of 510 N when you push with 170 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ A force of 180 N did 1080 J of work. How many metres did the object move?
  31. 31.🏋️ A 19 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A force of 350 N pushes a cart 6 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A force of 350 N did 2450 J of work. How many metres did the object move?
  34. 34.🏋️ A force of 440 N pushes a cart 7 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A force of 20 N did 160 J of work. How many metres did the object move?
  36. 36.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ Pushing a crate 3 m took 960 J of work. What force was used, in newtons?
  38. 38.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2600 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ Pushing a crate 6 m took 2160 J of work. What force was used, in newtons?
  40. 40.🏋️ A force of 360 N pushes a cart 10 m along the floor. How much work is done, in joules?

Answer key

  1. 3000
  2. 2
  3. 280
  4. 4
  5. 1360
  6. 1
  7. load ÷ effort
  8. 240
  9. joule (J)
  10. 300
  11. 180
  12. 10
  13. 3
  14. 100
  15. 2600
  16. 170
  17. 6
  18. 190
  19. 1
  20. 5
  21. 3
  22. 2
  23. 60
  24. 170
  25. 5
  26. 110
  27. 400
  28. 270
  29. 3
  30. 6
  31. 950
  32. 2100
  33. 7
  34. 3080
  35. 8
  36. 450
  37. 320
  38. 650
  39. 360
  40. 3600

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