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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 155 · 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 220 N did 660 J of work. How many metres did the object move?
  2. 2.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) yes, by half (c) only on Mondays (d) no, work stays the same
  3. 3.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
  5. 5.🏋️ A force of 110 N pushes a cart 1 m along the floor. How much work is done, in joules?
  6. 6.🏋️ A longer ramp to the same height needs … (a) no effort (b) more effort (c) the same effort (d) less effort
  7. 7.🏋️ Pushing a crate 7 m took 630 J of work. What force was used, in newtons?
  8. 8.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ In which unit is work measured? (a) newton (N) (b) watt hour (c) metre (m) (d) joule (J)
  11. 11.🏋️ Pushing a crate 5 m took 2400 J of work. What force was used, in newtons?
  12. 12.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A 15 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  15. 15.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
  16. 16.🏋️ A machine lifts a load of 60 N when you push with 20 N. What is its mechanical advantage (MA)?
  17. 17.🏋️ Pushing a crate 5 m took 1600 J of work. What force was used, in newtons?
  18. 18.🏋️ A 16 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ 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?
  21. 21.🏋️ A force of 190 N pushes a cart 4 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ Pushing a crate 6 m took 1020 J of work. What force was used, in newtons?
  24. 24.🏋️ A force of 490 N pushes a cart 10 m along the floor. How much work is done, in joules?
  25. 25.🏋️ A 19 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ A force of 100 N did 1000 J of work. How many metres did the object move?
  27. 27.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ Pushing a crate 5 m took 1100 J of work. What force was used, in newtons?
  29. 29.🏋️ Pushing a crate 8 m took 960 J of work. What force was used, in newtons?
  30. 30.🏋️ Pushing a crate 10 m took 3300 J of work. What force was used, in newtons?
  31. 31.🏋️ A 3 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 140 N pushes a cart 3 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A force of 450 N did 1800 J of work. How many metres did the object move?
  35. 35.🏋️ A machine lifts a load of 540 N when you push with 90 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ Pushing a crate 5 m took 350 J of work. What force was used, in newtons?
  37. 37.🏋️ A 15 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  38. 38.🏋️ A force of 40 N did 360 J of work. How many metres did the object move?
  39. 39.🏋️ A force of 410 N pushes a cart 7 m along the floor. How much work is done, in joules?
  40. 40.🏋️ A force of 10 N pushes a cart 7 m along the floor. How much work is done, in joules?

Answer key

  1. 3
  2. no, work stays the same
  3. 3
  4. 2
  5. 110
  6. less effort
  7. 90
  8. 5
  9. 5
  10. joule (J)
  11. 480
  12. 3
  13. 400
  14. 300
  15. load ÷ effort
  16. 3
  17. 320
  18. 160
  19. 600
  20. 30
  21. 760
  22. 450
  23. 170
  24. 4900
  25. 380
  26. 10
  27. 400
  28. 220
  29. 120
  30. 330
  31. 120
  32. 800
  33. 420
  34. 4
  35. 6
  36. 70
  37. 750
  38. 9
  39. 2870
  40. 70

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