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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 606 · 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.🏋️ Pushing a crate 1 m took 140 J of work. What force was used, in newtons?
  2. 2.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  4. 4.🏋️ Pushing a crate 6 m took 2700 J of work. What force was used, in newtons?
  5. 5.🏋️ A force of 390 N did 3900 J of work. How many metres did the object move?
  6. 6.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
  8. 8.🏋️ A force of 210 N did 630 J of work. How many metres did the object move?
  9. 9.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 700 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A machine lifts a load of 600 N when you push with 100 N. What is its mechanical advantage (MA)?
  11. 11.🏋️ A force of 230 N pushes a cart 8 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A force of 170 N pushes a cart 2 m along the floor. How much work is done, in joules?
  13. 13.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
  14. 14.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ Pushing a crate 9 m took 3600 J of work. What force was used, in newtons?
  16. 16.🏋️ A force of 310 N did 930 J of work. How many metres did the object move?
  17. 17.🏋️ Pushing a crate 1 m took 10 J of work. What force was used, in newtons?
  18. 18.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) newton (N) (d) joule (J)
  19. 19.🏋️ A force of 120 N pushes a cart 3 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 150 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A force of 150 N pushes a cart 5 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ A longer ramp to the same height needs … (a) the same effort (b) no effort (c) more effort (d) less effort
  24. 24.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
  26. 26.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1950 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ Pushing a crate 1 m took 250 J of work. What force was used, in newtons?
  28. 28.🏋️ A force of 360 N pushes a cart 4 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A force of 220 N pushes a cart 5 m along the floor. How much work is done, in joules?
  30. 30.🏋️ Pushing a crate 5 m took 1650 J of work. What force was used, in newtons?
  31. 31.🏋️ A 14 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A force of 160 N pushes a cart 9 m along the floor. How much work is done, in joules?
  33. 33.🏋️ An 11 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 17 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ Pushing a crate 4 m took 720 J of work. What force was used, in newtons?
  37. 37.🏋️ A machine lifts a load of 260 N when you push with 130 N. What is its mechanical advantage (MA)?
  38. 38.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ A force of 490 N pushes a cart 5 m along the floor. How much work is done, in joules?
  40. 40.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)

Answer key

  1. 140
  2. 750
  3. 300
  4. 450
  5. 10
  6. 900
  7. load ÷ effort
  8. 3
  9. 350
  10. 6
  11. 1840
  12. 340
  13. through a distance
  14. 900
  15. 400
  16. 3
  17. 10
  18. joule (J)
  19. 360
  20. 50
  21. 750
  22. 5
  23. less effort
  24. 600
  25. 3
  26. 650
  27. 250
  28. 1440
  29. 1100
  30. 330
  31. 560
  32. 1440
  33. 110
  34. 850
  35. 450
  36. 180
  37. 2
  38. 1000
  39. 2450
  40. 650

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