← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 905 · 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) less effort (d) no effort
  2. 2.🏋️ A force of 310 N did 620 J of work. How many metres did the object move?
  3. 3.🏋️ A force of 380 N pushes a cart 5 m along the floor. How much work is done, in joules?
  4. 4.🏋️ A force of 130 N pushes a cart 9 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 450 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ Pushing a crate 1 m took 240 J of work. What force was used, in newtons?
  7. 7.🏋️ Work is done when a force moves something … (a) only upwards (b) through a distance (c) very slowly (d) without moving it
  8. 8.🏋️ Pushing a crate 9 m took 2970 J of work. What force was used, in newtons?
  9. 9.🏋️ A force of 280 N did 840 J of work. How many metres did the object move?
  10. 10.🏋️ Pushing a crate 2 m took 780 J of work. What force was used, in newtons?
  11. 11.🏋️ Pushing a crate 2 m took 120 J of work. What force was used, in newtons?
  12. 12.🏋️ In which unit is work measured? (a) newton (N) (b) watt hour (c) metre (m) (d) joule (J)
  13. 13.🏋️ A machine lifts a load of 680 N when you push with 170 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ Pushing a crate 3 m took 990 J of work. What force was used, in newtons?
  15. 15.🏋️ Pushing a crate 6 m took 900 J of work. What force was used, in newtons?
  16. 16.🏋️ A force of 470 N pushes a cart 3 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A force of 360 N did 2880 J of work. How many metres did the object move?
  18. 18.🏋️ Pushing a crate 2 m took 220 J of work. What force was used, in newtons?
  19. 19.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ A force of 240 N did 1920 J of work. How many metres did the object move?
  21. 21.🏋️ A 10 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  22. 22.🏋️ A 15 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.🏋️ A force of 60 N did 180 J of work. How many metres did the object move?
  24. 24.🏋️ A force of 200 N did 800 J of work. How many metres did the object move?
  25. 25.🏋️ A force of 100 N pushes a cart 9 m along the floor. How much work is done, in joules?
  26. 26.🏋️ A machine lifts a load of 200 N when you push with 50 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  28. 28.🏋️ A force of 180 N pushes a cart 8 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3500 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ A force of 240 N pushes a cart 7 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ Pushing a crate 2 m took 440 J of work. What force was used, in newtons?
  34. 34.🏋️ 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?
  35. 35.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ Pushing a crate 9 m took 1350 J of work. What force was used, in newtons?
  37. 37.🏋️ Pushing a crate 3 m took 780 J of work. What force was used, in newtons?
  38. 38.🏋️ Pushing a crate 6 m took 1320 J of work. What force was used, in newtons?
  39. 39.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load ÷ effort (d) load + effort

Answer key

  1. less effort
  2. 2
  3. 1900
  4. 1170
  5. 150
  6. 240
  7. through a distance
  8. 330
  9. 3
  10. 390
  11. 60
  12. joule (J)
  13. 4
  14. 330
  15. 150
  16. 1410
  17. 8
  18. 110
  19. 700
  20. 8
  21. 400
  22. 300
  23. 3
  24. 4
  25. 900
  26. 4
  27. 5
  28. 1440
  29. 700
  30. 250
  31. 1680
  32. 200
  33. 220
  34. 380
  35. 4
  36. 150
  37. 260
  38. 220
  39. 300
  40. load ÷ effort

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