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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 825 · 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 longer ramp to the same height needs … (a) the same effort (b) more effort (c) no effort (d) less effort
  2. 2.🏋️ A force of 370 N pushes a cart 5 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A force of 330 N pushes a cart 1 m along the floor. How much work is done, in joules?
  4. 4.🏋️ A 1 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  5. 5.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ A force of 410 N did 3280 J of work. How many metres did the object move?
  7. 7.🏋️ A 9 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ A machine lifts a load of 120 N when you push with 30 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A force of 110 N did 990 J of work. How many metres did the object move?
  11. 11.🏋️ A force of 160 N pushes a cart 4 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A force of 200 N did 1200 J of work. How many metres did the object move?
  14. 14.🏋️ In which unit is work measured? (a) joule (J) (b) metre (m) (c) newton (N) (d) watt hour
  15. 15.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ 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?
  17. 17.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A force of 10 N did 60 J of work. How many metres did the object move?
  19. 19.🏋️ Pushing a crate 5 m took 2100 J of work. What force was used, in newtons?
  20. 20.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) only on Mondays (c) yes, by half (d) yes, always
  21. 21.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) without moving it (d) only upwards
  22. 22.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) effort ÷ load (d) load ÷ effort
  23. 23.🏋️ Pushing a crate 8 m took 3280 J of work. What force was used, in newtons?
  24. 24.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ A force of 60 N pushes a cart 3 m along the floor. How much work is done, in joules?
  26. 26.🏋️ A machine lifts a load of 480 N when you push with 160 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ A 5 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  29. 29.🏋️ 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)
  30. 30.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ Pushing a crate 5 m took 1100 J of work. What force was used, in newtons?
  32. 32.🏋️ 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?
  33. 33.🏋️ Pushing a crate 10 m took 2000 J of work. What force was used, in newtons?
  34. 34.🏋️ A force of 260 N pushes a cart 2 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A 1 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  36. 36.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1900 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ Pushing a crate 1 m took 200 J of work. What force was used, in newtons?
  38. 38.🏋️ A machine lifts a load of 1000 N when you push with 200 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ A 13 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

Answer key

  1. less effort
  2. 1850
  3. 330
  4. 10
  5. 200
  6. 8
  7. 450
  8. 4
  9. 650
  10. 9
  11. 640
  12. 5
  13. 6
  14. joule (J)
  15. 6
  16. 560
  17. 900
  18. 6
  19. 420
  20. no, work stays the same
  21. through a distance
  22. load ÷ effort
  23. 410
  24. 100
  25. 180
  26. 3
  27. 850
  28. 150
  29. 600
  30. 700
  31. 220
  32. 150
  33. 200
  34. 520
  35. 30
  36. 950
  37. 200
  38. 5
  39. 170
  40. 390

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