← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 737 · 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 160 N pushes a cart 5 m along the floor. How much work is done, in joules?
  2. 2.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
  3. 3.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ A longer ramp to the same height needs … (a) no effort (b) more effort (c) less effort (d) the same effort
  5. 5.🏋️ A 6 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  6. 6.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A force of 50 N did 300 J of work. How many metres did the object move?
  8. 8.🏋️ Pushing a crate 7 m took 420 J of work. What force was used, in newtons?
  9. 9.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2500 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ Pushing a crate 4 m took 680 J of work. What force was used, in newtons?
  11. 11.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
  12. 12.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  13. 13.🏋️ A force of 390 N pushes a cart 3 m along the floor. How much work is done, in joules?
  14. 14.🏋️ A force of 230 N pushes a cart 7 m along the floor. How much work is done, in joules?
  15. 15.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) newton (N) (d) metre (m)
  16. 16.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3800 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ Pushing a crate 3 m took 900 J of work. What force was used, in newtons?
  18. 18.🏋️ A 15 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A machine lifts a load of 1140 N when you push with 190 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ 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)
  21. 21.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2200 N box up it, in newtons? (ideal ramp, no friction)
  22. 22.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) effort ÷ load (c) load × effort (d) load + effort
  23. 23.🏋️ A force of 450 N pushes a cart 1 m along the floor. How much work is done, in joules?
  24. 24.🏋️ Pushing a crate 8 m took 2800 J of work. What force was used, in newtons?
  25. 25.🏋️ Pushing a crate 7 m took 490 J of work. What force was used, in newtons?
  26. 26.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ A machine lifts a load of 180 N when you push with 90 N. What is its mechanical advantage (MA)?
  28. 28.🏋️ 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?
  29. 29.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A machine lifts a load of 780 N when you push with 130 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ 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?
  35. 35.🏋️ A force of 170 N pushes a cart 9 m along the floor. How much work is done, in joules?
  36. 36.🏋️ A force of 130 N pushes a cart 10 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1950 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A force of 160 N did 800 J of work. How many metres did the object move?
  39. 39.🏋️ A force of 110 N did 550 J of work. How many metres did the object move?
  40. 40.🏋️ Pushing a crate 2 m took 680 J of work. What force was used, in newtons?

Answer key

  1. 800
  2. through a distance
  3. 5
  4. less effort
  5. 240
  6. 4
  7. 6
  8. 60
  9. 500
  10. 170
  11. no, work stays the same
  12. 300
  13. 1170
  14. 1610
  15. joule (J)
  16. 950
  17. 300
  18. 750
  19. 6
  20. 100
  21. 550
  22. load ÷ effort
  23. 450
  24. 350
  25. 70
  26. 600
  27. 2
  28. 130
  29. 800
  30. 6
  31. 6
  32. 800
  33. 250
  34. 300
  35. 1530
  36. 1300
  37. 650
  38. 5
  39. 5
  40. 340

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