← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 75 · 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 430 N did 860 J of work. How many metres did the object move?
  2. 2.🏋️ Work is done when a force moves something … (a) without moving it (b) very slowly (c) only upwards (d) through a distance
  3. 3.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) watt hour (d) metre (m)
  4. 4.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load ÷ effort (d) load + effort
  5. 5.🏋️ A 2 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  6. 6.🏋️ A force of 410 N did 2870 J of work. How many metres did the object move?
  7. 7.🏋️ Pushing a crate 8 m took 3840 J of work. What force was used, in newtons?
  8. 8.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3750 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ Pushing a crate 5 m took 650 J of work. What force was used, in newtons?
  11. 11.🏋️ 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)
  12. 12.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ 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?
  14. 14.🏋️ Pushing a crate 8 m took 3440 J of work. What force was used, in newtons?
  15. 15.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A force of 250 N pushes a cart 4 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A force of 420 N did 1260 J of work. How many metres did the object move?
  18. 18.🏋️ Pushing a crate 2 m took 600 J of work. What force was used, in newtons?
  19. 19.🏋️ A 13 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  20. 20.🏋️ A force of 230 N did 920 J of work. How many metres did the object move?
  21. 21.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) no effort (d) more effort
  22. 22.🏋️ A force of 280 N pushes a cart 9 m along the floor. How much work is done, in joules?
  23. 23.🏋️ A force of 470 N did 4700 J of work. How many metres did the object move?
  24. 24.🏋️ A machine lifts a load of 180 N when you push with 30 N. What is its mechanical advantage (MA)?
  25. 25.🏋️ A force of 10 N did 30 J of work. How many metres did the object move?
  26. 26.🏋️ Pushing a crate 8 m took 3200 J of work. What force was used, in newtons?
  27. 27.🏋️ A force of 30 N did 300 J of work. How many metres did the object move?
  28. 28.🏋️ A force of 340 N pushes a cart 7 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A force of 470 N did 4230 J of work. How many metres did the object move?
  30. 30.🏋️ 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?
  31. 31.🏋️ A 14 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A machine lifts a load of 540 N when you push with 180 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A force of 70 N did 70 J of work. How many metres did the object move?
  35. 35.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ A machine lifts a load of 280 N when you push with 70 N. What is its mechanical advantage (MA)?
  37. 37.🏋️ 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?
  38. 38.🏋️ A force of 70 N did 140 J of work. How many metres did the object move?
  39. 39.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A force of 110 N did 770 J of work. How many metres did the object move?

Answer key

  1. 2
  2. through a distance
  3. joule (J)
  4. load ÷ effort
  5. 100
  6. 7
  7. 480
  8. 750
  9. 300
  10. 130
  11. 400
  12. 250
  13. 40
  14. 430
  15. 200
  16. 1000
  17. 3
  18. 300
  19. 520
  20. 4
  21. less effort
  22. 2520
  23. 10
  24. 6
  25. 3
  26. 400
  27. 10
  28. 2380
  29. 9
  30. 300
  31. 140
  32. 3
  33. 700
  34. 1
  35. 400
  36. 4
  37. 280
  38. 2
  39. 100
  40. 7

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