← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 71 · 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.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load × effort (d) load + effort
  2. 2.🏋️ Pushing a crate 1 m took 50 J of work. What force was used, in newtons?
  3. 3.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
  4. 4.🏋️ Pushing a crate 2 m took 180 J of work. What force was used, in newtons?
  5. 5.🏋️ A machine lifts a load of 900 N when you push with 180 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A force of 330 N did 330 J of work. How many metres did the object move?
  7. 7.🏋️ A force of 240 N did 960 J of work. How many metres did the object move?
  8. 8.🏋️ A force of 270 N pushes a cart 2 m along the floor. How much work is done, in joules?
  9. 9.🏋️ A 15 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  10. 10.🏋️ A force of 250 N did 500 J of work. How many metres did the object move?
  11. 11.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  12. 12.🏋️ A longer ramp to the same height needs … (a) more effort (b) no effort (c) the same effort (d) less effort
  13. 13.🏋️ Pushing a crate 4 m took 1440 J of work. What force was used, in newtons?
  14. 14.🏋️ Pushing a crate 6 m took 600 J of work. What force was used, in newtons?
  15. 15.🏋️ A 7 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ A 19 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  17. 17.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
  18. 18.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
  19. 19.🏋️ A force of 400 N pushes a cart 1 m along the floor. How much work is done, in joules?
  20. 20.🏋️ Pushing a crate 8 m took 1920 J of work. What force was used, in newtons?
  21. 21.🏋️ 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)
  22. 22.🏋️ An 18 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  23. 23.🏋️ Pushing a crate 8 m took 3680 J of work. What force was used, in newtons?
  24. 24.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1900 N box up it, in newtons? (ideal ramp, no friction)
  26. 26.🏋️ Pushing a crate 8 m took 800 J of work. What force was used, in newtons?
  27. 27.🏋️ Pushing a crate 5 m took 400 J of work. What force was used, in newtons?
  28. 28.🏋️ A force of 260 N did 260 J of work. How many metres did the object move?
  29. 29.🏋️ A 4 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) metre (m) (d) joule (J)
  31. 31.🏋️ A force of 480 N did 4320 J of work. How many metres did the object move?
  32. 32.🏋️ Pushing a crate 6 m took 1440 J of work. What force was used, in newtons?
  33. 33.🏋️ A force of 370 N pushes a cart 5 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A machine lifts a load of 240 N when you push with 60 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A 1 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  38. 38.🏋️ A 7 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  39. 39.🏋️ Pushing a crate 9 m took 3690 J of work. What force was used, in newtons?
  40. 40.🏋️ A force of 30 N did 30 J of work. How many metres did the object move?

Answer key

  1. load ÷ effort
  2. 50
  3. through a distance
  4. 90
  5. 5
  6. 1
  7. 4
  8. 540
  9. 600
  10. 2
  11. 500
  12. less effort
  13. 360
  14. 100
  15. 280
  16. 380
  17. 2
  18. 4
  19. 400
  20. 240
  21. 250
  22. 360
  23. 460
  24. 900
  25. 950
  26. 100
  27. 80
  28. 1
  29. 40
  30. joule (J)
  31. 9
  32. 240
  33. 1850
  34. 4
  35. 2
  36. 500
  37. 40
  38. 350
  39. 410
  40. 1

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