← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 24 · 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 16 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  2. 2.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) more effort (d) no effort
  3. 3.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load ÷ effort (d) load × effort
  4. 4.🏋️ Pushing a crate 10 m took 4500 J of work. What force was used, in newtons?
  5. 5.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A 1 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 310 N pushes a cart 3 m along the floor. How much work is done, in joules?
  9. 9.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) joule (J) (d) metre (m)
  10. 10.🏋️ A force of 200 N pushes a cart 4 m along the floor. How much work is done, in joules?
  11. 11.🏋️ 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)
  12. 12.🏋️ Pushing a crate 8 m took 2640 J of work. What force was used, in newtons?
  13. 13.🏋️ Pushing a crate 2 m took 380 J of work. What force was used, in newtons?
  14. 14.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 250 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A force of 70 N did 70 J of work. How many metres did the object move?
  16. 16.🏋️ A force of 20 N pushes a cart 7 m along the floor. How much work is done, in joules?
  17. 17.🏋️ Pushing a crate 4 m took 40 J of work. What force was used, in newtons?
  18. 18.🏋️ Pushing a crate 6 m took 960 J of work. What force was used, in newtons?
  19. 19.🏋️ A 9 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  20. 20.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A force of 400 N pushes a cart 1 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A force of 270 N pushes a cart 3 m along the floor. How much work is done, in joules?
  23. 23.🏋️ 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?
  24. 24.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
  25. 25.🏋️ Pushing a crate 10 m took 100 J of work. What force was used, in newtons?
  26. 26.🏋️ Pushing a crate 7 m took 1120 J of work. What force was used, in newtons?
  27. 27.🏋️ 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)
  28. 28.🏋️ A force of 390 N pushes a cart 1 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A force of 250 N did 2000 J of work. How many metres did the object move?
  30. 30.🏋️ A force of 30 N did 120 J of work. How many metres did the object move?
  31. 31.🏋️ Pushing a crate 3 m took 60 J of work. What force was used, in newtons?
  32. 32.🏋️ A force of 480 N pushes a cart 2 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A machine lifts a load of 720 N when you push with 120 N. What is its mechanical advantage (MA)?
  34. 34.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 1140 N when you push with 190 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A force of 440 N did 880 J of work. How many metres did the object move?
  37. 37.🏋️ Pushing a crate 7 m took 1960 J of work. What force was used, in newtons?
  38. 38.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

Answer key

  1. 640
  2. less effort
  3. load ÷ effort
  4. 450
  5. 6
  6. 5
  7. 40
  8. 930
  9. joule (J)
  10. 800
  11. 400
  12. 330
  13. 190
  14. 50
  15. 1
  16. 140
  17. 10
  18. 160
  19. 90
  20. 1000
  21. 400
  22. 810
  23. 300
  24. through a distance
  25. 10
  26. 160
  27. 700
  28. 390
  29. 8
  30. 4
  31. 20
  32. 960
  33. 6
  34. 80
  35. 6
  36. 2
  37. 280
  38. 150
  39. 400
  40. 20

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