← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 85 · 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.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) yes, by half (d) no, work stays the same
  2. 2.🏋️ 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)
  3. 3.🏋️ In which unit is work measured? (a) joule (J) (b) metre (m) (c) newton (N) (d) watt hour
  4. 4.🏋️ A force of 100 N pushes a cart 1 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A machine lifts a load of 300 N when you push with 50 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ Pushing a crate 5 m took 750 J of work. What force was used, in newtons?
  8. 8.🏋️ A 13 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A force of 40 N did 40 J of work. How many metres did the object move?
  10. 10.🏋️ Pushing a crate 3 m took 270 J of work. What force was used, in newtons?
  11. 11.🏋️ A force of 100 N pushes a cart 8 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
  14. 14.🏋️ A machine lifts a load of 210 N when you push with 70 N. What is its mechanical advantage (MA)?
  15. 15.🏋️ A 9 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ Pushing a crate 3 m took 330 J of work. What force was used, in newtons?
  17. 17.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A force of 210 N pushes a cart 4 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A machine lifts a load of 480 N when you push with 160 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A force of 190 N pushes a cart 8 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A 6 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  23. 23.🏋️ A 3 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ A force of 170 N did 1190 J of work. How many metres did the object move?
  25. 25.🏋️ A force of 440 N pushes a cart 7 m along the floor. How much work is done, in joules?
  26. 26.🏋️ A machine lifts a load of 340 N when you push with 170 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ 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?
  28. 28.🏋️ A force of 300 N did 1800 J of work. How many metres did the object move?
  29. 29.🏋️ A force of 480 N pushes a cart 2 m along the floor. How much work is done, in joules?
  30. 30.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  31. 31.🏋️ A force of 440 N pushes a cart 1 m along the floor. How much work is done, in joules?
  32. 32.🏋️ Pushing a crate 1 m took 150 J of work. What force was used, in newtons?
  33. 33.🏋️ A machine lifts a load of 560 N when you push with 140 N. What is its mechanical advantage (MA)?
  34. 34.🏋️ Pushing a crate 10 m took 3000 J of work. What force was used, in newtons?
  35. 35.🏋️ 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)
  36. 36.🏋️ A force of 340 N did 3060 J of work. How many metres did the object move?
  37. 37.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A force of 200 N pushes a cart 4 m along the floor. How much work is done, in joules?
  39. 39.🏋️ Pushing a crate 2 m took 360 J of work. What force was used, in newtons?
  40. 40.🏋️ A 9 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

Answer key

  1. no, work stays the same
  2. 600
  3. joule (J)
  4. 100
  5. 6
  6. 200
  7. 150
  8. 130
  9. 1
  10. 90
  11. 800
  12. 450
  13. through a distance
  14. 3
  15. 270
  16. 110
  17. 300
  18. 350
  19. 840
  20. 3
  21. 1520
  22. 300
  23. 150
  24. 7
  25. 3080
  26. 2
  27. 140
  28. 6
  29. 960
  30. 60
  31. 440
  32. 150
  33. 4
  34. 300
  35. 400
  36. 9
  37. 950
  38. 800
  39. 180
  40. 360

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