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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 870 · 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 190 N pushes a cart 4 m along the floor. How much work is done, in joules?
  2. 2.🏋️ Pushing a crate 10 m took 3400 J of work. What force was used, in newtons?
  3. 3.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) metre (m) (d) watt hour
  5. 5.🏋️ Pushing a crate 9 m took 3780 J of work. What force was used, in newtons?
  6. 6.🏋️ A longer ramp to the same height needs … (a) no effort (b) more effort (c) less effort (d) the same effort
  7. 7.🏋️ A force of 460 N pushes a cart 4 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A 10 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 150 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A force of 400 N did 1600 J of work. How many metres did the object move?
  12. 12.🏋️ Pushing a crate 1 m took 170 J of work. What force was used, in newtons?
  13. 13.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
  14. 14.🏋️ Pushing a crate 5 m took 700 J of work. What force was used, in newtons?
  15. 15.🏋️ A force of 420 N did 3780 J of work. How many metres did the object move?
  16. 16.🏋️ A force of 420 N pushes a cart 10 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A force of 330 N did 3300 J of work. How many metres did the object move?
  18. 18.🏋️ A force of 300 N pushes a cart 8 m along the floor. How much work is done, in joules?
  19. 19.🏋️ Pushing a crate 10 m took 3000 J of work. What force was used, in newtons?
  20. 20.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  21. 21.🏋️ Pushing a crate 5 m took 2000 J of work. What force was used, in newtons?
  22. 22.🏋️ A force of 60 N pushes a cart 10 m along the floor. How much work is done, in joules?
  23. 23.🏋️ A force of 140 N pushes a cart 2 m along the floor. How much work is done, in joules?
  24. 24.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load ÷ effort (c) load × effort (d) effort ÷ load
  26. 26.🏋️ A force of 130 N did 260 J of work. How many metres did the object move?
  27. 27.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ 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)
  29. 29.🏋️ A force of 250 N pushes a cart 3 m along the floor. How much work is done, in joules?
  30. 30.🏋️ A force of 10 N pushes a cart 8 m along the floor. How much work is done, in joules?
  31. 31.🏋️ A force of 290 N pushes a cart 4 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A force of 170 N pushes a cart 2 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A force of 80 N pushes a cart 7 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  35. 35.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 4250 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A force of 380 N pushes a cart 4 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 230 N pushes a cart 6 m along the floor. How much work is done, in joules?
  40. 40.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?

Answer key

  1. 760
  2. 340
  3. 5
  4. joule (J)
  5. 420
  6. less effort
  7. 1840
  8. 200
  9. 1000
  10. 50
  11. 4
  12. 170
  13. through a distance
  14. 140
  15. 9
  16. 4200
  17. 10
  18. 2400
  19. 300
  20. 180
  21. 400
  22. 600
  23. 280
  24. 150
  25. load ÷ effort
  26. 2
  27. 1000
  28. 550
  29. 750
  30. 80
  31. 1160
  32. 340
  33. 560
  34. 750
  35. 6
  36. 850
  37. 1520
  38. 5
  39. 1380
  40. 4

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