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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 503 · 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.🏋️ Pushing a crate 10 m took 3300 J of work. What force was used, in newtons?
  2. 2.🏋️ A force of 230 N did 230 J of work. How many metres did the object move?
  3. 3.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) newton (N) (d) joule (J)
  4. 4.🏋️ A force of 150 N pushes a cart 3 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A force of 80 N did 800 J of work. How many metres did the object move?
  6. 6.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) load × effort (d) effort ÷ load
  7. 7.🏋️ A force of 360 N pushes a cart 9 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A force of 280 N did 560 J of work. How many metres did the object move?
  10. 10.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) very slowly (d) only upwards
  11. 11.🏋️ A force of 440 N pushes a cart 9 m along the floor. How much work is done, in joules?
  12. 12.🏋️ Pushing a crate 7 m took 2240 J of work. What force was used, in newtons?
  13. 13.🏋️ A machine lifts a load of 400 N when you push with 100 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
  15. 15.🏋️ Pushing a crate 4 m took 80 J of work. What force was used, in newtons?
  16. 16.🏋️ Pushing a crate 8 m took 2480 J of work. What force was used, in newtons?
  17. 17.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A force of 140 N pushes a cart 2 m along the floor. How much work is done, in joules?
  19. 19.🏋️ Pushing a crate 3 m took 1170 J of work. What force was used, in newtons?
  20. 20.🏋️ A force of 50 N did 400 J of work. How many metres did the object move?
  21. 21.🏋️ A force of 20 N pushes a cart 4 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A 16 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, 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 17 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ A force of 80 N pushes a cart 4 m along the floor. How much work is done, in joules?
  26. 26.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ Pushing a crate 8 m took 400 J of work. What force was used, in newtons?
  28. 28.🏋️ A force of 200 N did 1400 J of work. How many metres did the object move?
  29. 29.🏋️ Pushing a crate 10 m took 2600 J of work. What force was used, in newtons?
  30. 30.🏋️ A force of 130 N pushes a cart 3 m along the floor. How much work is done, in joules?
  31. 31.🏋️ A force of 160 N did 960 J of work. How many metres did the object move?
  32. 32.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1300 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ Pushing a crate 2 m took 200 J of work. What force was used, in newtons?
  34. 34.🏋️ Pushing a crate 8 m took 720 J of work. What force was used, in newtons?
  35. 35.🏋️ An 8 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  36. 36.🏋️ A force of 270 N did 2160 J of work. How many metres did the object move?
  37. 37.🏋️ A machine lifts a load of 600 N when you push with 120 N. What is its mechanical advantage (MA)?
  38. 38.🏋️ A force of 290 N pushes a cart 2 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A force of 440 N pushes a cart 5 m along the floor. How much work is done, in joules?
  40. 40.🏋️ 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?

Answer key

  1. 330
  2. 1
  3. joule (J)
  4. 450
  5. 10
  6. load ÷ effort
  7. 3240
  8. 6
  9. 2
  10. through a distance
  11. 3960
  12. 320
  13. 4
  14. less effort
  15. 20
  16. 310
  17. 750
  18. 280
  19. 390
  20. 8
  21. 80
  22. 800
  23. 160
  24. 510
  25. 320
  26. 200
  27. 50
  28. 7
  29. 260
  30. 390
  31. 6
  32. 650
  33. 100
  34. 90
  35. 80
  36. 8
  37. 5
  38. 580
  39. 2200
  40. 210

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