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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 990 · 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 smooth ramp is 3 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  2. 2.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  4. 4.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2500 N box up it, in newtons? (ideal ramp, no friction)
  5. 5.🏋️ A force of 380 N pushes a cart 9 m along the floor. How much work is done, in joules?
  6. 6.🏋️ A machine lifts a load of 780 N when you push with 130 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A force of 250 N did 2000 J of work. How many metres did the object move?
  8. 8.🏋️ A force of 100 N pushes a cart 2 m along the floor. How much work is done, in joules?
  9. 9.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) joule (J) (d) newton (N)
  10. 10.🏋️ A machine lifts a load of 700 N when you push with 140 N. What is its mechanical advantage (MA)?
  11. 11.🏋️ A force of 220 N pushes a cart 10 m along the floor. How much work is done, in joules?
  12. 12.🏋️ Pushing a crate 2 m took 180 J of work. What force was used, in newtons?
  13. 13.🏋️ A machine lifts a load of 900 N when you push with 180 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ A force of 240 N did 480 J of work. How many metres did the object move?
  15. 15.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
  16. 16.🏋️ A force of 440 N pushes a cart 6 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A force of 20 N pushes a cart 3 m along the floor. How much work is done, in joules?
  18. 18.🏋️ Pushing a crate 5 m took 350 J of work. What force was used, in newtons?
  19. 19.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ Pushing a crate 7 m took 1050 J of work. What force was used, in newtons?
  21. 21.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) through a distance (d) without moving it
  22. 22.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) yes, by half (d) only on Mondays
  23. 23.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ A force of 170 N pushes a cart 9 m along the floor. How much work is done, in joules?
  25. 25.🏋️ Pushing a crate 1 m took 340 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 320 N did 2560 J of work. How many metres did the object move?
  27. 27.🏋️ A force of 150 N pushes a cart 5 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A force of 310 N did 310 J of work. How many metres did the object move?
  29. 29.🏋️ A force of 210 N pushes a cart 8 m along the floor. How much work is done, in joules?
  30. 30.🏋️ A machine lifts a load of 720 N when you push with 120 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ 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)
  32. 32.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2500 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A force of 40 N pushes a cart 7 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A force of 340 N did 680 J of work. How many metres did the object move?
  36. 36.🏋️ A machine lifts a load of 100 N when you push with 50 N. What is its mechanical advantage (MA)?
  37. 37.🏋️ A force of 100 N pushes a cart 9 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 310 N did 1860 J of work. How many metres did the object move?
  40. 40.🏋️ Pushing a crate 4 m took 1560 J of work. What force was used, in newtons?

Answer key

  1. 800
  2. 350
  3. 400
  4. 500
  5. 3420
  6. 6
  7. 8
  8. 200
  9. joule (J)
  10. 5
  11. 2200
  12. 90
  13. 5
  14. 2
  15. load ÷ effort
  16. 2640
  17. 60
  18. 70
  19. 600
  20. 150
  21. through a distance
  22. no, work stays the same
  23. 100
  24. 1530
  25. 340
  26. 8
  27. 750
  28. 1
  29. 1680
  30. 6
  31. 50
  32. 850
  33. 500
  34. 280
  35. 2
  36. 2
  37. 900
  38. 4
  39. 6
  40. 390

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