← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 501 · 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.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) effort ÷ load (c) load × effort (d) load + effort
  2. 2.🏋️ An 18 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  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 430 N did 3440 J of work. How many metres did the object move?
  5. 5.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ A machine lifts a load of 320 N when you push with 160 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  8. 8.🏋️ A 1 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A machine lifts a load of 300 N when you push with 100 N. What is its mechanical advantage (MA)?
  11. 11.🏋️ A 2 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  12. 12.🏋️ 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
  13. 13.🏋️ A force of 250 N pushes a cart 6 m along the floor. How much work is done, in joules?
  14. 14.🏋️ A force of 60 N did 540 J of work. How many metres did the object move?
  15. 15.🏋️ Pushing a crate 7 m took 2520 J of work. What force was used, in newtons?
  16. 16.🏋️ A machine lifts a load of 200 N when you push with 100 N. What is its mechanical advantage (MA)?
  17. 17.🏋️ A force of 320 N pushes a cart 6 m along the floor. How much work is done, in joules?
  18. 18.🏋️ A 16 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A longer ramp to the same height needs … (a) no effort (b) less effort (c) the same effort (d) more effort
  20. 20.🏋️ 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?
  21. 21.🏋️ A force of 30 N did 60 J of work. How many metres did the object move?
  22. 22.🏋️ Pushing a crate 10 m took 3600 J of work. What force was used, in newtons?
  23. 23.🏋️ 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?
  24. 24.🏋️ Pushing a crate 6 m took 240 J of work. What force was used, in newtons?
  25. 25.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  26. 26.🏋️ A machine lifts a load of 90 N when you push with 30 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ A force of 90 N pushes a cart 8 m along the floor. How much work is done, in joules?
  29. 29.🏋️ Pushing a crate 1 m took 360 J of work. What force was used, in newtons?
  30. 30.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ A machine lifts a load of 420 N when you push with 70 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A 5 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ Pushing a crate 7 m took 3500 J of work. What force was used, in newtons?
  34. 34.🏋️ A force of 340 N pushes a cart 2 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 50 N when you push with 10 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ Pushing a crate 3 m took 360 J of work. What force was used, in newtons?
  38. 38.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) only upwards (d) through a distance
  39. 39.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A force of 490 N pushes a cart 3 m along the floor. How much work is done, in joules?

Answer key

  1. load ÷ effort
  2. 720
  3. joule (J)
  4. 8
  5. 100
  6. 2
  7. 80
  8. 50
  9. 750
  10. 3
  11. 40
  12. no, work stays the same
  13. 1500
  14. 9
  15. 360
  16. 2
  17. 1920
  18. 320
  19. less effort
  20. 120
  21. 2
  22. 360
  23. 640
  24. 40
  25. 200
  26. 3
  27. 900
  28. 720
  29. 360
  30. 5
  31. 6
  32. 200
  33. 500
  34. 680
  35. 5
  36. 900
  37. 120
  38. through a distance
  39. 450
  40. 1470

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