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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 679 · 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 130 N pushes a cart 4 m along the floor. How much work is done, in joules?
  2. 2.🏋️ Pushing a crate 3 m took 1410 J of work. What force was used, in newtons?
  3. 3.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) effort ÷ load (d) load + effort
  4. 4.🏋️ A machine lifts a load of 540 N when you push with 90 N. What is its mechanical advantage (MA)?
  5. 5.🏋️ A force of 150 N did 900 J of work. How many metres did the object move?
  6. 6.🏋️ A 4 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  7. 7.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  8. 8.🏋️ 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?
  9. 9.🏋️ A force of 200 N pushes a cart 6 m along the floor. How much work is done, in joules?
  10. 10.🏋️ Pushing a crate 2 m took 420 J of work. What force was used, in newtons?
  11. 11.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) only upwards (d) very slowly
  12. 12.🏋️ A force of 210 N pushes a cart 2 m along the floor. How much work is done, in joules?
  13. 13.🏋️ A force of 230 N did 460 J of work. How many metres did the object move?
  14. 14.🏋️ Pushing a crate 3 m took 660 J of work. What force was used, in newtons?
  15. 15.🏋️ A 13 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
  17. 17.🏋️ A force of 400 N did 800 J of work. How many metres did the object move?
  18. 18.🏋️ Pushing a crate 5 m took 200 J of work. What force was used, in newtons?
  19. 19.🏋️ Pushing a crate 8 m took 160 J of work. What force was used, in newtons?
  20. 20.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ 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)
  22. 22.🏋️ A force of 370 N did 3330 J of work. How many metres did the object move?
  23. 23.🏋️ Pushing a crate 3 m took 1290 J of work. What force was used, in newtons?
  24. 24.🏋️ A force of 400 N did 2400 J of work. How many metres did the object move?
  25. 25.🏋️ A 4 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ A force of 130 N did 390 J of work. How many metres did the object move?
  27. 27.🏋️ Pushing a crate 9 m took 540 J of work. What force was used, in newtons?
  28. 28.🏋️ An 8 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  29. 29.🏋️ Pushing a crate 5 m took 1900 J of work. What force was used, in newtons?
  30. 30.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ Pushing a crate 4 m took 1160 J of work. What force was used, in newtons?
  32. 32.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 140 N pushes a cart 5 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A 5 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ A force of 230 N pushes a cart 5 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A force of 440 N did 2200 J of work. How many metres did the object move?
  38. 38.🏋️ A force of 220 N did 220 J of work. How many metres did the object move?
  39. 39.🏋️ A machine lifts a load of 380 N when you push with 190 N. What is its mechanical advantage (MA)?
  40. 40.🏋️ Pushing a crate 6 m took 1920 J of work. What force was used, in newtons?

Answer key

  1. 520
  2. 470
  3. load ÷ effort
  4. 6
  5. 6
  6. 160
  7. 600
  8. 40
  9. 1200
  10. 210
  11. through a distance
  12. 420
  13. 2
  14. 220
  15. 130
  16. joule (J)
  17. 2
  18. 40
  19. 20
  20. 3
  21. 1000
  22. 9
  23. 430
  24. 6
  25. 120
  26. 3
  27. 60
  28. 160
  29. 380
  30. 900
  31. 290
  32. 1000
  33. 700
  34. 200
  35. 300
  36. 1150
  37. 5
  38. 1
  39. 2
  40. 320

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