← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 280 · 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.🏋️ Pushing a crate 6 m took 540 J of work. What force was used, in newtons?
  2. 2.🏋️ A machine lifts a load of 900 N when you push with 150 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ Pushing a crate 2 m took 500 J of work. What force was used, in newtons?
  4. 4.🏋️ 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
  5. 5.🏋️ A force of 80 N did 480 J of work. How many metres did the object move?
  6. 6.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A 5 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ Pushing a crate 4 m took 1280 J of work. What force was used, in newtons?
  9. 9.🏋️ 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?
  10. 10.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
  11. 11.🏋️ A force of 500 N pushes a cart 9 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A force of 230 N pushes a cart 8 m along the floor. How much work is done, in joules?
  13. 13.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) through a distance (d) without moving it
  14. 14.🏋️ Pushing a crate 3 m took 30 J of work. What force was used, in newtons?
  15. 15.🏋️ A force of 470 N did 940 J of work. How many metres did the object move?
  16. 16.🏋️ Pushing a crate 3 m took 480 J of work. What force was used, in newtons?
  17. 17.🏋️ Pushing a crate 1 m took 500 J of work. What force was used, in newtons?
  18. 18.🏋️ A force of 260 N pushes a cart 7 m along the floor. How much work is done, in joules?
  19. 19.🏋️ A force of 330 N did 660 J of work. How many metres did the object move?
  20. 20.🏋️ A force of 190 N pushes a cart 6 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  22. 22.🏋️ Pushing a crate 6 m took 2520 J of work. What force was used, in newtons?
  23. 23.🏋️ A longer ramp to the same height needs … (a) more effort (b) the same effort (c) less effort (d) no effort
  24. 24.🏋️ 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)
  25. 25.🏋️ Pushing a crate 8 m took 2240 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 310 N pushes a cart 1 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A 10 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.🏋️ Pushing a crate 4 m took 1840 J of work. What force was used, in newtons?
  29. 29.🏋️ Pushing a crate 1 m took 490 J of work. What force was used, in newtons?
  30. 30.🏋️ A force of 90 N pushes a cart 4 m along the floor. How much work is done, in joules?
  31. 31.🏋️ Pushing a crate 5 m took 700 J of work. What force was used, in newtons?
  32. 32.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 3300 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A force of 450 N pushes a cart 2 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 570 N when you push with 190 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ In which unit is work measured? (a) joule (J) (b) metre (m) (c) newton (N) (d) watt hour
  37. 37.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A force of 350 N pushes a cart 10 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A machine lifts a load of 510 N when you push with 170 N. What is its mechanical advantage (MA)?

Answer key

  1. 90
  2. 6
  3. 250
  4. no, work stays the same
  5. 6
  6. 3
  7. 150
  8. 320
  9. 90
  10. load ÷ effort
  11. 4500
  12. 1840
  13. through a distance
  14. 10
  15. 2
  16. 160
  17. 500
  18. 1820
  19. 2
  20. 1140
  21. 100
  22. 420
  23. less effort
  24. 300
  25. 280
  26. 310
  27. 100
  28. 460
  29. 490
  30. 360
  31. 140
  32. 550
  33. 100
  34. 900
  35. 3
  36. joule (J)
  37. 300
  38. 3500
  39. 600
  40. 3

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