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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 828 · 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 490 N did 980 J of work. How many metres did the object move?
  2. 2.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) only upwards (d) through a distance
  3. 3.🏋️ A 3 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 360 N pushes a cart 6 m along the floor. How much work is done, in joules?
  5. 5.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) watt hour (d) newton (N)
  6. 6.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1650 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ A force of 340 N did 2720 J of work. How many metres did the object move?
  8. 8.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
  9. 9.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A force of 30 N pushes a cart 2 m along the floor. How much work is done, in joules?
  11. 11.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1650 N box up it, in newtons? (ideal ramp, no friction)
  12. 12.🏋️ 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)
  13. 13.🏋️ 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?
  14. 14.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 750 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A machine lifts a load of 400 N when you push with 100 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ Pushing a crate 7 m took 630 J of work. What force was used, in newtons?
  17. 17.🏋️ A force of 430 N pushes a cart 10 m along the floor. How much work is done, in joules?
  18. 18.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) yes, by half (d) no, work stays the same
  19. 19.🏋️ A 20 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  20. 20.🏋️ 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)
  21. 21.🏋️ Pushing a crate 2 m took 780 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 2100 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ A machine lifts a load of 440 N when you push with 110 N. What is its mechanical advantage (MA)?
  25. 25.🏋️ A force of 10 N did 30 J of work. How many metres did the object move?
  26. 26.🏋️ Pushing a crate 5 m took 450 J of work. What force was used, in newtons?
  27. 27.🏋️ A force of 220 N pushes a cart 7 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A force of 50 N pushes a cart 9 m along the floor. How much work is done, in joules?
  29. 29.🏋️ 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?
  30. 30.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ A 10 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3750 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ Pushing a crate 2 m took 960 J of work. What force was used, in newtons?
  35. 35.🏋️ A force of 20 N did 20 J of work. How many metres did the object move?
  36. 36.🏋️ 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?
  37. 37.🏋️ A force of 260 N did 2600 J of work. How many metres did the object move?
  38. 38.🏋️ A force of 190 N pushes a cart 3 m along the floor. How much work is done, in joules?
  39. 39.🏋️ Pushing a crate 2 m took 260 J of work. What force was used, in newtons?
  40. 40.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load × effort (d) load ÷ effort

Answer key

  1. 2
  2. through a distance
  3. 150
  4. 2160
  5. joule (J)
  6. 550
  7. 8
  8. less effort
  9. 50
  10. 60
  11. 550
  12. 700
  13. 200
  14. 150
  15. 4
  16. 90
  17. 4300
  18. no, work stays the same
  19. 1000
  20. 250
  21. 390
  22. 350
  23. 150
  24. 4
  25. 3
  26. 90
  27. 1540
  28. 450
  29. 50
  30. 3
  31. 100
  32. 750
  33. 300
  34. 480
  35. 1
  36. 240
  37. 10
  38. 570
  39. 130
  40. load ÷ effort

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