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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 8 · 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.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) joule (J) (d) watt hour
  2. 2.🏋️ Pushing a crate 2 m took 440 J of work. What force was used, in newtons?
  3. 3.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  4. 4.🏋️ A force of 410 N pushes a cart 3 m along the floor. How much work is done, in joules?
  5. 5.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) no, work stays the same (d) yes, by half
  6. 6.🏋️ Pushing a crate 5 m took 50 J of work. What force was used, in newtons?
  7. 7.🏋️ A force of 330 N pushes a cart 2 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) less effort (d) no effort
  9. 9.🏋️ A machine lifts a load of 180 N when you push with 60 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
  11. 11.🏋️ A force of 10 N pushes a cart 3 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  14. 14.🏋️ Pushing a crate 3 m took 270 J of work. What force was used, in newtons?
  15. 15.🏋️ A force of 250 N pushes a cart 8 m along the floor. How much work is done, in joules?
  16. 16.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 5000 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A force of 30 N did 90 J of work. How many metres did the object move?
  18. 18.🏋️ Pushing a crate 9 m took 1980 J of work. What force was used, in newtons?
  19. 19.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ Pushing a crate 7 m took 700 J of work. What force was used, in newtons?
  21. 21.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A force of 40 N did 40 J of work. How many metres did the object move?
  23. 23.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
  24. 24.🏋️ A force of 40 N pushes a cart 1 m along the floor. How much work is done, in joules?
  25. 25.🏋️ A force of 460 N pushes a cart 2 m along the floor. How much work is done, in joules?
  26. 26.🏋️ 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?
  27. 27.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ Pushing a crate 10 m took 4500 J of work. What force was used, in newtons?
  29. 29.🏋️ 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)
  30. 30.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ A force of 20 N did 60 J of work. How many metres did the object move?
  32. 32.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ Pushing a crate 10 m took 3600 J of work. What force was used, in newtons?
  34. 34.🏋️ A force of 410 N did 410 J of work. How many metres did the object move?
  35. 35.🏋️ A force of 390 N pushes a cart 7 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 20 N pushes a cart 9 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
  38. 38.🏋️ A force of 70 N did 140 J of work. How many metres did the object move?
  39. 39.🏋️ A 12 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ Pushing a crate 1 m took 420 J of work. What force was used, in newtons?

Answer key

  1. joule (J)
  2. 220
  3. 500
  4. 1230
  5. no, work stays the same
  6. 10
  7. 660
  8. less effort
  9. 3
  10. through a distance
  11. 30
  12. 850
  13. 70
  14. 90
  15. 2000
  16. 1000
  17. 3
  18. 220
  19. 3
  20. 100
  21. 4
  22. 1
  23. 2
  24. 40
  25. 920
  26. 750
  27. 900
  28. 450
  29. 650
  30. 400
  31. 3
  32. 550
  33. 360
  34. 1
  35. 2730
  36. 180
  37. 2
  38. 2
  39. 240
  40. 420

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