← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 669 · 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.🏋️ Pushing a crate 6 m took 840 J of work. What force was used, in newtons?
  2. 2.🏋️ Pushing a crate 2 m took 380 J of work. What force was used, in newtons?
  3. 3.🏋️ A longer ramp to the same height needs … (a) no effort (b) less effort (c) more effort (d) the same effort
  4. 4.🏋️ A 17 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  5. 5.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load + effort (d) load ÷ effort
  6. 6.🏋️ A force of 370 N pushes a cart 5 m along the floor. How much work is done, in joules?
  7. 7.🏋️ A 6 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ Pushing a crate 5 m took 2150 J of work. What force was used, in newtons?
  9. 9.🏋️ Pushing a crate 1 m took 300 J of work. What force was used, in newtons?
  10. 10.🏋️ Pushing a crate 4 m took 960 J of work. What force was used, in newtons?
  11. 11.🏋️ A force of 420 N pushes a cart 2 m along the floor. How much work is done, in joules?
  12. 12.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
  13. 13.🏋️ Pushing a crate 3 m took 960 J of work. What force was used, in newtons?
  14. 14.🏋️ A force of 90 N pushes a cart 1 m along the floor. How much work is done, in joules?
  15. 15.🏋️ A machine lifts a load of 260 N when you push with 130 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) only on Mondays (c) no, work stays the same (d) yes, always
  17. 17.🏋️ A 17 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 smooth ramp is 3 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ Pushing a crate 9 m took 1980 J of work. What force was used, in newtons?
  20. 20.🏋️ A force of 260 N did 1300 J of work. How many metres did the object move?
  21. 21.🏋️ A force of 300 N did 3000 J of work. How many metres did the object move?
  22. 22.🏋️ A machine lifts a load of 560 N when you push with 140 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
  24. 24.🏋️ A force of 350 N did 1750 J of work. How many metres did the object move?
  25. 25.🏋️ A force of 70 N did 140 J of work. How many metres did the object move?
  26. 26.🏋️ A force of 170 N pushes a cart 4 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A force of 60 N pushes a cart 10 m along the floor. How much work is done, in joules?
  28. 28.🏋️ Pushing a crate 5 m took 750 J of work. What force was used, in newtons?
  29. 29.🏋️ A force of 220 N pushes a cart 9 m along the floor. How much work is done, in joules?
  30. 30.🏋️ A machine lifts a load of 480 N when you push with 120 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ A force of 170 N did 510 J of work. How many metres did the object move?
  32. 32.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ Pushing a crate 10 m took 100 J of work. What force was used, in newtons?
  34. 34.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  35. 35.🏋️ A force of 180 N pushes a cart 3 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 300 N did 1200 J of work. How many metres did the object move?
  37. 37.🏋️ Pushing a crate 1 m took 70 J of work. What force was used, in newtons?
  38. 38.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ A force of 40 N did 360 J of work. How many metres did the object move?
  40. 40.🏋️ A force of 300 N did 600 J of work. How many metres did the object move?

Answer key

  1. 140
  2. 190
  3. less effort
  4. 340
  5. load ÷ effort
  6. 1850
  7. 120
  8. 430
  9. 300
  10. 240
  11. 840
  12. through a distance
  13. 320
  14. 90
  15. 2
  16. no, work stays the same
  17. 850
  18. 500
  19. 220
  20. 5
  21. 10
  22. 4
  23. joule (J)
  24. 5
  25. 2
  26. 680
  27. 600
  28. 150
  29. 1980
  30. 4
  31. 3
  32. 600
  33. 10
  34. 400
  35. 540
  36. 4
  37. 70
  38. 300
  39. 9
  40. 2

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