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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 424 · 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 440 N did 3960 J of work. How many metres did the object move?
  2. 2.🏋️ A machine lifts a load of 150 N when you push with 30 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ A 20 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  4. 4.🏋️ A 9 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  5. 5.🏋️ Pushing a crate 3 m took 660 J of work. What force was used, in newtons?
  6. 6.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load ÷ effort (d) load × effort
  7. 7.🏋️ A force of 130 N pushes a cart 7 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A machine lifts a load of 450 N when you push with 90 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A force of 300 N pushes a cart 8 m along the floor. How much work is done, in joules?
  10. 10.🏋️ In which unit is work measured? (a) newton (N) (b) watt hour (c) joule (J) (d) metre (m)
  11. 11.🏋️ Pushing a crate 2 m took 260 J of work. What force was used, in newtons?
  12. 12.🏋️ A force of 130 N did 390 J of work. How many metres did the object move?
  13. 13.🏋️ A 7 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  14. 14.🏋️ Pushing a crate 1 m took 430 J of work. What force was used, in newtons?
  15. 15.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
  16. 16.🏋️ A force of 210 N pushes a cart 7 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A 20 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A force of 70 N pushes a cart 6 m along the floor. How much work is done, in joules?
  19. 19.🏋️ Pushing a crate 9 m took 4140 J of work. What force was used, in newtons?
  20. 20.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A force of 300 N pushes a cart 6 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A force of 110 N pushes a cart 1 m along the floor. How much work is done, in joules?
  23. 23.🏋️ 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?
  24. 24.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ Pushing a crate 3 m took 600 J of work. What force was used, in newtons?
  26. 26.🏋️ A machine lifts a load of 600 N when you push with 100 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A force of 350 N pushes a cart 7 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A 14 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  29. 29.🏋️ A force of 140 N pushes a cart 9 m along the floor. How much work is done, in joules?
  30. 30.🏋️ Pushing a crate 9 m took 3150 J of work. What force was used, in newtons?
  31. 31.🏋️ Pushing a crate 6 m took 420 J of work. What force was used, in newtons?
  32. 32.🏋️ A machine lifts a load of 50 N when you push with 10 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ Pushing a crate 2 m took 160 J of work. What force was used, in newtons?
  34. 34.🏋️ A force of 100 N pushes a cart 3 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A force of 90 N pushes a cart 5 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 110 N did 550 J of work. How many metres did the object move?
  37. 37.🏋️ A force of 290 N did 2900 J of work. How many metres did the object move?
  38. 38.🏋️ A machine lifts a load of 420 N when you push with 140 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A 1 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ A force of 100 N pushes a cart 1 m along the floor. How much work is done, in joules?

Answer key

  1. 9
  2. 5
  3. 800
  4. 270
  5. 220
  6. load ÷ effort
  7. 910
  8. 5
  9. 2400
  10. joule (J)
  11. 130
  12. 3
  13. 210
  14. 430
  15. through a distance
  16. 1470
  17. 400
  18. 420
  19. 460
  20. 5
  21. 1800
  22. 110
  23. 160
  24. 1000
  25. 200
  26. 6
  27. 2450
  28. 420
  29. 1260
  30. 350
  31. 70
  32. 5
  33. 80
  34. 300
  35. 450
  36. 5
  37. 10
  38. 3
  39. 30
  40. 100

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