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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 489 · 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 100 N when you push with 50 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ A force of 460 N pushes a cart 6 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ Pushing a crate 10 m took 2000 J of work. What force was used, in newtons?
  5. 5.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  6. 6.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) newton (N) (d) joule (J)
  7. 7.🏋️ A force of 420 N did 2520 J of work. How many metres did the object move?
  8. 8.🏋️ A force of 440 N pushes a cart 9 m along the floor. How much work is done, in joules?
  9. 9.🏋️ Work is done when a force moves something … (a) only upwards (b) through a distance (c) without moving it (d) very slowly
  10. 10.🏋️ A force of 230 N did 690 J of work. How many metres did the object move?
  11. 11.🏋️ Pushing a crate 7 m took 2030 J of work. What force was used, in newtons?
  12. 12.🏋️ A force of 170 N pushes a cart 8 m along the floor. How much work is done, in joules?
  13. 13.🏋️ Pushing a crate 3 m took 270 J of work. What force was used, in newtons?
  14. 14.🏋️ A 10 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  15. 15.🏋️ A force of 330 N pushes a cart 7 m along the floor. How much work is done, in joules?
  16. 16.🏋️ A force of 50 N pushes a cart 3 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A force of 250 N pushes a cart 6 m along the floor. How much work is done, in joules?
  18. 18.🏋️ Pushing a crate 7 m took 630 J of work. What force was used, in newtons?
  19. 19.🏋️ A force of 470 N pushes a cart 6 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A force of 140 N pushes a cart 2 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A force of 360 N pushes a cart 5 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A machine lifts a load of 1000 N when you push with 200 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ Pushing a crate 7 m took 1260 J of work. What force was used, in newtons?
  24. 24.🏋️ A machine lifts a load of 760 N when you push with 190 N. What is its mechanical advantage (MA)?
  25. 25.🏋️ A machine lifts a load of 280 N when you push with 70 N. What is its mechanical advantage (MA)?
  26. 26.🏋️ A machine lifts a load of 280 N when you push with 140 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
  28. 28.🏋️ A force of 100 N did 200 J of work. How many metres did the object move?
  29. 29.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) less effort (d) more effort
  30. 30.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, always (d) yes, by half
  32. 32.🏋️ A force of 30 N pushes a cart 3 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A force of 450 N did 3150 J of work. How many metres did the object move?
  34. 34.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A force of 90 N pushes a cart 6 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 370 N pushes a cart 6 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A force of 160 N did 960 J of work. How many metres did the object move?
  38. 38.🏋️ A machine lifts a load of 600 N when you push with 120 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?

Answer key

  1. 2
  2. 2760
  3. 3
  4. 200
  5. 180
  6. joule (J)
  7. 6
  8. 3960
  9. through a distance
  10. 3
  11. 290
  12. 1360
  13. 90
  14. 500
  15. 2310
  16. 150
  17. 1500
  18. 90
  19. 2820
  20. 280
  21. 1800
  22. 5
  23. 180
  24. 4
  25. 4
  26. 2
  27. 4
  28. 2
  29. less effort
  30. 3
  31. no, work stays the same
  32. 90
  33. 7
  34. 80
  35. 540
  36. 2220
  37. 6
  38. 5
  39. 350
  40. 2

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