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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 457 · 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 370 N did 2590 J of work. How many metres did the object move?
  2. 2.🏋️ A force of 170 N pushes a cart 1 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A force of 470 N pushes a cart 4 m along the floor. How much work is done, in joules?
  4. 4.🏋️ Pushing a crate 10 m took 2600 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.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) metre (m) (d) newton (N)
  8. 8.🏋️ A force of 200 N did 600 J of work. How many metres did the object move?
  9. 9.🏋️ A 20 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  10. 10.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load + effort (d) load × effort
  11. 11.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  12. 12.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A force of 420 N did 3780 J of work. How many metres did the object move?
  15. 15.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1300 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A force of 480 N pushes a cart 2 m along the floor. How much work is done, in joules?
  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.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
  20. 20.🏋️ Pushing a crate 6 m took 1620 J of work. What force was used, in newtons?
  21. 21.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  22. 22.🏋️ A 1 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  23. 23.🏋️ A force of 230 N pushes a cart 4 m along the floor. How much work is done, in joules?
  24. 24.🏋️ Pushing a crate 9 m took 1440 J of work. What force was used, in newtons?
  25. 25.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A machine lifts a load of 720 N when you push with 120 N. What is its mechanical advantage (MA)?
  28. 28.🏋️ Pushing a crate 5 m took 400 J of work. What force was used, in newtons?
  29. 29.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ Pushing a crate 3 m took 690 J of work. What force was used, in newtons?
  32. 32.🏋️ A longer ramp to the same height needs … (a) less effort (b) the same effort (c) more effort (d) no effort
  33. 33.🏋️ 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?
  34. 34.🏋️ A 2 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 140 N did 280 J of work. How many metres did the object move?
  36. 36.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2750 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A force of 20 N did 180 J of work. How many metres did the object move?
  39. 39.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A force of 460 N pushes a cart 5 m along the floor. How much work is done, in joules?

Answer key

  1. 7
  2. 170
  3. 1880
  4. 260
  5. 180
  6. 700
  7. joule (J)
  8. 3
  9. 200
  10. load ÷ effort
  11. 250
  12. 4
  13. 300
  14. 9
  15. 650
  16. 100
  17. 960
  18. 800
  19. through a distance
  20. 270
  21. 150
  22. 10
  23. 920
  24. 160
  25. 170
  26. 3
  27. 6
  28. 80
  29. 1000
  30. 4
  31. 230
  32. less effort
  33. 50
  34. 40
  35. 2
  36. 550
  37. 750
  38. 9
  39. 50
  40. 2300

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