← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 305 · 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 15 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  2. 2.🏋️ A 6 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  3. 3.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ A 5 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  5. 5.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) without moving it (d) very slowly
  6. 6.🏋️ A machine lifts a load of 50 N when you push with 10 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A machine lifts a load of 600 N when you push with 100 N. What is its mechanical advantage (MA)?
  8. 8.🏋️ A longer ramp to the same height needs … (a) no effort (b) the same effort (c) more effort (d) less effort
  9. 9.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ A 14 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  11. 11.🏋️ A machine lifts a load of 160 N when you push with 80 N. What is its mechanical advantage (MA)?
  12. 12.🏋️ A force of 120 N pushes a cart 1 m along the floor. How much work is done, in joules?
  13. 13.🏋️ A 12 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 9 m took 1890 J of work. What force was used, in newtons?
  15. 15.🏋️ Pushing a crate 10 m took 3600 J of work. What force was used, in newtons?
  16. 16.🏋️ Pushing a crate 7 m took 3500 J of work. What force was used, in newtons?
  17. 17.🏋️ An 18 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
  19. 19.🏋️ A force of 40 N pushes a cart 4 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A force of 450 N did 900 J of work. How many metres did the object move?
  21. 21.🏋️ A force of 20 N pushes a cart 2 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A force of 260 N did 1300 J of work. How many metres did the object move?
  23. 23.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
  24. 24.🏋️ A machine lifts a load of 720 N when you push with 120 N. What is its mechanical advantage (MA)?
  25. 25.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) yes, by half (c) no, work stays the same (d) only on Mondays
  26. 26.🏋️ A force of 260 N pushes a cart 9 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ A force of 460 N did 3680 J of work. How many metres did the object move?
  29. 29.🏋️ A force of 430 N did 4300 J of work. How many metres did the object move?
  30. 30.🏋️ A force of 170 N did 1530 J of work. How many metres did the object move?
  31. 31.🏋️ A force of 90 N did 270 J of work. How many metres did the object move?
  32. 32.🏋️ A machine lifts a load of 400 N when you push with 100 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A machine lifts a load of 510 N when you push with 170 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ A force of 470 N pushes a cart 7 m along the floor. How much work is done, in joules?
  37. 37.🏋️ A force of 190 N pushes a cart 8 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A force of 10 N pushes a cart 5 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A machine lifts a load of 280 N when you push with 70 N. What is its mechanical advantage (MA)?
  40. 40.🏋️ A 13 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?

Answer key

  1. 150
  2. 60
  3. 2
  4. 100
  5. through a distance
  6. 5
  7. 6
  8. less effort
  9. 2
  10. 420
  11. 2
  12. 120
  13. 120
  14. 210
  15. 360
  16. 500
  17. 180
  18. 2
  19. 160
  20. 2
  21. 40
  22. 5
  23. 3
  24. 6
  25. no, work stays the same
  26. 2340
  27. 400
  28. 8
  29. 10
  30. 9
  31. 3
  32. 4
  33. 900
  34. 3
  35. 750
  36. 3290
  37. 1520
  38. 50
  39. 4
  40. 650

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