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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 295 · 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 machine lifts a load of 570 N when you push with 190 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ A force of 250 N did 1250 J of work. How many metres did the object move?
  3. 3.🏋️ A 1 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  4. 4.🏋️ A force of 140 N did 280 J of work. How many metres did the object move?
  5. 5.🏋️ A force of 90 N did 270 J of work. How many metres did the object move?
  6. 6.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ Pushing a crate 7 m took 770 J of work. What force was used, in newtons?
  8. 8.🏋️ A 12 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ Pushing a crate 2 m took 380 J of work. What force was used, in newtons?
  10. 10.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
  11. 11.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  12. 12.🏋️ A force of 50 N pushes a cart 2 m along the floor. How much work is done, in joules?
  13. 13.🏋️ A force of 490 N pushes a cart 1 m along the floor. How much work is done, in joules?
  14. 14.🏋️ A force of 490 N pushes a cart 7 m along the floor. How much work is done, in joules?
  15. 15.🏋️ A force of 120 N pushes a cart 8 m along the floor. How much work is done, in joules?
  16. 16.🏋️ Pushing a crate 7 m took 210 J of work. What force was used, in newtons?
  17. 17.🏋️ Pushing a crate 10 m took 2000 J of work. What force was used, in newtons?
  18. 18.🏋️ 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?
  19. 19.🏋️ A 5 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  20. 20.🏋️ An 18 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  21. 21.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ Pushing a crate 9 m took 3960 J of work. What force was used, in newtons?
  23. 23.🏋️ A force of 420 N did 840 J of work. How many metres did the object move?
  24. 24.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3500 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ Pushing a crate 8 m took 3680 J of work. What force was used, in newtons?
  26. 26.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
  27. 27.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  28. 28.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  29. 29.🏋️ A 7 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ Pushing a crate 10 m took 1800 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 60 N pushes a cart 3 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A force of 340 N pushes a cart 7 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A force of 470 N pushes a cart 3 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A force of 290 N did 2900 J of work. How many metres did the object move?
  35. 35.🏋️ A machine lifts a load of 80 N when you push with 40 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 750 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A force of 350 N pushes a cart 3 m along the floor. How much work is done, in joules?
  38. 38.🏋️ Pushing a crate 9 m took 3600 J of work. What force was used, in newtons?
  39. 39.🏋️ A force of 500 N pushes a cart 4 m along the floor. How much work is done, in joules?
  40. 40.🏋️ 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?

Answer key

  1. 3
  2. 5
  3. 50
  4. 2
  5. 3
  6. 6
  7. 110
  8. 360
  9. 190
  10. through a distance
  11. 200
  12. 100
  13. 490
  14. 3430
  15. 960
  16. 30
  17. 200
  18. 800
  19. 50
  20. 360
  21. 3
  22. 440
  23. 2
  24. 700
  25. 460
  26. no, work stays the same
  27. 60
  28. 800
  29. 350
  30. 180
  31. 180
  32. 2380
  33. 1410
  34. 10
  35. 2
  36. 250
  37. 1050
  38. 400
  39. 2000
  40. 80

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