← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 569 · 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 50 N pushes a cart 2 m along the floor. How much work is done, in joules?
  2. 2.🏋️ A machine lifts a load of 280 N when you push with 140 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ An 8 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 180 J of work. What force was used, in newtons?
  5. 5.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ Pushing a crate 7 m took 2800 J of work. What force was used, in newtons?
  7. 7.🏋️ A 5 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ A force of 350 N did 700 J of work. How many metres did the object move?
  9. 9.🏋️ A force of 120 N did 600 J of work. How many metres did the object move?
  10. 10.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 6000 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A force of 200 N pushes a cart 4 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2750 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A 5 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  14. 14.🏋️ A force of 70 N pushes a cart 2 m along the floor. How much work is done, in joules?
  15. 15.🏋️ 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)
  16. 16.🏋️ A force of 450 N pushes a cart 3 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
  19. 19.🏋️ 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?
  20. 20.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) watt hour (d) newton (N)
  21. 21.🏋️ A machine lifts a load of 210 N when you push with 70 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ 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?
  23. 23.🏋️ Pushing a crate 4 m took 640 J of work. What force was used, in newtons?
  24. 24.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) through a distance (d) very slowly
  25. 25.🏋️ Pushing a crate 8 m took 3440 J of work. What force was used, in newtons?
  26. 26.🏋️ Pushing a crate 4 m took 1080 J of work. What force was used, in newtons?
  27. 27.🏋️ A force of 20 N did 140 J of work. How many metres did the object move?
  28. 28.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) no, work stays the same (d) yes, by half
  29. 29.🏋️ Pushing a crate 2 m took 540 J of work. What force was used, in newtons?
  30. 30.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) load × effort (d) effort ÷ load
  31. 31.🏋️ A force of 470 N pushes a cart 5 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ Pushing a crate 1 m took 230 J of work. What force was used, in newtons?
  34. 34.🏋️ Pushing a crate 2 m took 1000 J of work. What force was used, in newtons?
  35. 35.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ Pushing a crate 2 m took 460 J of work. What force was used, in newtons?
  37. 37.🏋️ A machine lifts a load of 800 N when you push with 160 N. What is its mechanical advantage (MA)?
  38. 38.🏋️ A 19 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  39. 39.🏋️ Pushing a crate 7 m took 2940 J of work. What force was used, in newtons?
  40. 40.🏋️ A force of 480 N did 1440 J of work. How many metres did the object move?

Answer key

  1. 100
  2. 2
  3. 240
  4. 30
  5. 300
  6. 400
  7. 200
  8. 2
  9. 5
  10. 1000
  11. 800
  12. 550
  13. 100
  14. 140
  15. 1000
  16. 1350
  17. 100
  18. 4
  19. 30
  20. joule (J)
  21. 3
  22. 40
  23. 160
  24. through a distance
  25. 430
  26. 270
  27. 7
  28. no, work stays the same
  29. 270
  30. load ÷ effort
  31. 2350
  32. 2
  33. 230
  34. 500
  35. 450
  36. 230
  37. 5
  38. 570
  39. 420
  40. 3

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