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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 948 · 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 240 N when you push with 80 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ Pushing a crate 10 m took 900 J of work. What force was used, in newtons?
  3. 3.🏋️ A force of 40 N pushes a cart 5 m along the floor. How much work is done, in joules?
  4. 4.🏋️ Pushing a crate 8 m took 2720 J of work. What force was used, in newtons?
  5. 5.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ A force of 330 N pushes a cart 9 m along the floor. How much work is done, in joules?
  7. 7.🏋️ Pushing a crate 1 m took 20 J of work. What force was used, in newtons?
  8. 8.🏋️ A force of 40 N pushes a cart 7 m along the floor. How much work is done, in joules?
  9. 9.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A 5 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.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
  13. 13.🏋️ Pushing a crate 3 m took 180 J of work. What force was used, in newtons?
  14. 14.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) metre (m) (d) newton (N)
  15. 15.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, by half (d) yes, always
  16. 16.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) only upwards (d) very slowly
  17. 17.🏋️ Pushing a crate 6 m took 2280 J of work. What force was used, in newtons?
  18. 18.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A force of 200 N did 1200 J of work. How many metres did the object move?
  20. 20.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  22. 22.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A force of 210 N pushes a cart 8 m along the floor. How much work is done, in joules?
  24. 24.🏋️ Pushing a crate 3 m took 1380 J of work. What force was used, in newtons?
  25. 25.🏋️ A force of 330 N did 1320 J of work. How many metres did the object move?
  26. 26.🏋️ A machine lifts a load of 200 N when you push with 50 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A force of 210 N pushes a cart 3 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A force of 490 N did 4410 J of work. How many metres did the object move?
  29. 29.🏋️ A 10 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ Pushing a crate 8 m took 1040 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 280 N did 1400 J of work. How many metres did the object move?
  32. 32.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1750 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 90 N pushes a cart 6 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A 20 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ Pushing a crate 7 m took 3430 J of work. What force was used, in newtons?
  36. 36.🏋️ A force of 310 N pushes a cart 5 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A 6 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  38. 38.🏋️ A force of 270 N did 1620 J of work. How many metres did the object move?
  39. 39.🏋️ A force of 260 N did 1040 J of work. How many metres did the object move?
  40. 40.🏋️ A machine lifts a load of 500 N when you push with 100 N. What is its mechanical advantage (MA)?

Answer key

  1. 3
  2. 90
  3. 200
  4. 340
  5. 250
  6. 2970
  7. 20
  8. 280
  9. 100
  10. 200
  11. 250
  12. load ÷ effort
  13. 60
  14. joule (J)
  15. no, work stays the same
  16. through a distance
  17. 380
  18. 700
  19. 6
  20. 50
  21. 180
  22. 200
  23. 1680
  24. 460
  25. 4
  26. 4
  27. 630
  28. 9
  29. 400
  30. 130
  31. 5
  32. 350
  33. 540
  34. 600
  35. 490
  36. 1550
  37. 180
  38. 6
  39. 4
  40. 5

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