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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 588 · 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 310 N did 2480 J of work. How many metres did the object move?
  2. 2.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load ÷ effort (d) load × effort
  3. 3.🏋️ A 15 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  4. 4.🏋️ A force of 100 N pushes a cart 2 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A force of 470 N did 3760 J of work. How many metres did the object move?
  6. 6.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A longer ramp to the same height needs … (a) less effort (b) the same effort (c) more effort (d) no effort
  8. 8.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ A force of 390 N did 3510 J of work. How many metres did the object move?
  10. 10.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) joule (J) (d) newton (N)
  11. 11.🏋️ A 4 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  12. 12.🏋️ A force of 170 N pushes a cart 5 m along the floor. How much work is done, in joules?
  13. 13.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A machine lifts a load of 80 N when you push with 40 N. What is its mechanical advantage (MA)?
  15. 15.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ Pushing a crate 3 m took 360 J of work. What force was used, in newtons?
  17. 17.🏋️ A machine lifts a load of 540 N when you push with 180 N. What is its mechanical advantage (MA)?
  18. 18.🏋️ A 6 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ Pushing a crate 2 m took 200 J of work. What force was used, in newtons?
  21. 21.🏋️ Pushing a crate 8 m took 2160 J of work. What force was used, in newtons?
  22. 22.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ 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?
  24. 24.🏋️ Pushing a crate 5 m took 1100 J of work. What force was used, in newtons?
  25. 25.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
  26. 26.🏋️ 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?
  27. 27.🏋️ A force of 490 N pushes a cart 4 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A force of 40 N did 200 J of work. How many metres did the object move?
  29. 29.🏋️ A force of 270 N did 2700 J of work. How many metres did the object move?
  30. 30.🏋️ A force of 290 N did 870 J of work. How many metres did the object move?
  31. 31.🏋️ A machine lifts a load of 120 N when you push with 20 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A force of 100 N pushes a cart 5 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2750 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A 16 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 500 N pushes a cart 10 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 220 N pushes a cart 10 m along the floor. How much work is done, in joules?
  37. 37.🏋️ Pushing a crate 6 m took 3000 J of work. What force was used, in newtons?
  38. 38.🏋️ Pushing a crate 5 m took 450 J of work. What force was used, in newtons?
  39. 39.🏋️ A 6 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ Pushing a crate 9 m took 450 J of work. What force was used, in newtons?

Answer key

  1. 8
  2. load ÷ effort
  3. 600
  4. 200
  5. 8
  6. 6
  7. less effort
  8. 200
  9. 9
  10. joule (J)
  11. 200
  12. 850
  13. 550
  14. 2
  15. 750
  16. 120
  17. 3
  18. 300
  19. 50
  20. 100
  21. 270
  22. 850
  23. 500
  24. 220
  25. through a distance
  26. 40
  27. 1960
  28. 5
  29. 10
  30. 3
  31. 6
  32. 500
  33. 550
  34. 320
  35. 5000
  36. 2200
  37. 500
  38. 90
  39. 240
  40. 50

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