← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 225 · 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 370 N pushes a cart 2 m along the floor. How much work is done, in joules?
  2. 2.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  4. 4.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  5. 5.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
  6. 6.🏋️ A force of 20 N pushes a cart 1 m along the floor. How much work is done, in joules?
  7. 7.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) without moving it (d) very slowly
  8. 8.🏋️ A 7 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A force of 30 N did 210 J of work. How many metres did the object move?
  10. 10.🏋️ A force of 40 N pushes a cart 5 m along the floor. How much work is done, in joules?
  11. 11.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) only on Mondays (d) yes, always
  12. 12.🏋️ Pushing a crate 1 m took 110 J of work. What force was used, in newtons?
  13. 13.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A force of 70 N pushes a cart 5 m along the floor. How much work is done, in joules?
  16. 16.🏋️ A force of 360 N did 2160 J of work. How many metres did the object move?
  17. 17.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
  18. 18.🏋️ A longer ramp to the same height needs … (a) no effort (b) less effort (c) more effort (d) the same effort
  19. 19.🏋️ A force of 470 N pushes a cart 9 m along the floor. How much work is done, in joules?
  20. 20.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load ÷ effort (d) load × effort
  21. 21.🏋️ Pushing a crate 2 m took 420 J of work. What force was used, in newtons?
  22. 22.🏋️ A force of 220 N did 1760 J of work. How many metres did the object move?
  23. 23.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ Pushing a crate 8 m took 3200 J of work. What force was used, in newtons?
  25. 25.🏋️ Pushing a crate 1 m took 490 J of work. What force was used, in newtons?
  26. 26.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  27. 27.🏋️ A force of 330 N pushes a cart 4 m along the floor. How much work is done, in joules?
  28. 28.🏋️ 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?
  29. 29.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A force of 130 N pushes a cart 7 m along the floor. How much work is done, in joules?
  31. 31.🏋️ Pushing a crate 3 m took 1170 J of work. What force was used, in newtons?
  32. 32.🏋️ A force of 480 N did 480 J of work. How many metres did the object move?
  33. 33.🏋️ A force of 260 N did 1560 J of work. How many metres did the object move?
  34. 34.🏋️ Pushing a crate 8 m took 2640 J of work. What force was used, in newtons?
  35. 35.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ Pushing a crate 7 m took 3500 J of work. What force was used, in newtons?
  37. 37.🏋️ Pushing a crate 9 m took 2610 J of work. What force was used, in newtons?
  38. 38.🏋️ A force of 150 N pushes a cart 7 m along the floor. How much work is done, in joules?
  39. 39.🏋️ Pushing a crate 10 m took 4500 J of work. What force was used, in newtons?
  40. 40.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3750 N box up it, in newtons? (ideal ramp, no friction)

Answer key

  1. 740
  2. 2
  3. 850
  4. 150
  5. joule (J)
  6. 20
  7. through a distance
  8. 140
  9. 7
  10. 200
  11. no, work stays the same
  12. 110
  13. 4
  14. 900
  15. 350
  16. 6
  17. 3
  18. less effort
  19. 4230
  20. load ÷ effort
  21. 210
  22. 8
  23. 1000
  24. 400
  25. 490
  26. 110
  27. 1320
  28. 90
  29. 400
  30. 910
  31. 390
  32. 1
  33. 6
  34. 330
  35. 100
  36. 500
  37. 290
  38. 1050
  39. 450
  40. 750

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