← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 877 · 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 330 N pushes a cart 2 m along the floor. How much work is done, in joules?
  2. 2.🏋️ A longer ramp to the same height needs … (a) the same effort (b) more effort (c) less effort (d) no effort
  3. 3.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) effort ÷ load (d) load + effort
  4. 4.🏋️ A force of 340 N did 3060 J of work. How many metres did the object move?
  5. 5.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  7. 7.🏋️ A force of 420 N pushes a cart 7 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A force of 440 N pushes a cart 10 m along the floor. How much work is done, in joules?
  9. 9.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) without moving it (d) very slowly
  10. 10.🏋️ A 12 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  11. 11.🏋️ Pushing a crate 6 m took 540 J of work. What force was used, in newtons?
  12. 12.🏋️ Pushing a crate 2 m took 960 J of work. What force was used, in newtons?
  13. 13.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) no, work stays the same (d) yes, by half
  14. 14.🏋️ A 2 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  15. 15.🏋️ A machine lifts a load of 140 N when you push with 70 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ A 6 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  17. 17.🏋️ An 8 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A force of 210 N did 840 J of work. How many metres did the object move?
  19. 19.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ A machine lifts a load of 900 N when you push with 180 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A force of 420 N did 840 J of work. How many metres did the object move?
  22. 22.🏋️ A force of 360 N did 1440 J of work. How many metres did the object move?
  23. 23.🏋️ A force of 370 N did 1480 J of work. How many metres did the object move?
  24. 24.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ A force of 290 N did 580 J of work. How many metres did the object move?
  26. 26.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) joule (J) (d) watt hour
  27. 27.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ Pushing a crate 6 m took 360 J of work. What force was used, in newtons?
  29. 29.🏋️ A 3 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ An 11 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  31. 31.🏋️ A force of 480 N pushes a cart 9 m along the floor. How much work is done, in joules?
  32. 32.🏋️ Pushing a crate 6 m took 1140 J of work. What force was used, in newtons?
  33. 33.🏋️ Pushing a crate 6 m took 1920 J of work. What force was used, in newtons?
  34. 34.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  37. 37.🏋️ Pushing a crate 2 m took 640 J of work. What force was used, in newtons?
  38. 38.🏋️ Pushing a crate 3 m took 960 J of work. What force was used, in newtons?
  39. 39.🏋️ A 7 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 machine lifts a load of 50 N when you push with 10 N. What is its mechanical advantage (MA)?

Answer key

  1. 660
  2. less effort
  3. load ÷ effort
  4. 9
  5. 5
  6. 80
  7. 2940
  8. 4400
  9. through a distance
  10. 600
  11. 90
  12. 480
  13. no, work stays the same
  14. 100
  15. 2
  16. 60
  17. 400
  18. 4
  19. 950
  20. 5
  21. 2
  22. 4
  23. 4
  24. 1000
  25. 2
  26. joule (J)
  27. 800
  28. 60
  29. 90
  30. 330
  31. 4320
  32. 190
  33. 320
  34. 20
  35. 6
  36. 60
  37. 320
  38. 320
  39. 70
  40. 5

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids