← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 584 · 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 machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 5700 N box up it, in newtons? (ideal ramp, no friction)
  4. 4.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, by half (d) yes, always
  5. 5.🏋️ A force of 500 N did 4500 J of work. How many metres did the object move?
  6. 6.🏋️ Pushing a crate 4 m took 1800 J of work. What force was used, in newtons?
  7. 7.🏋️ A 3 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 smooth ramp is 12 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ A force of 370 N did 2960 J of work. How many metres did the object move?
  10. 10.🏋️ In which unit is work measured? (a) watt hour (b) newton (N) (c) metre (m) (d) joule (J)
  11. 11.🏋️ 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?
  12. 12.🏋️ A force of 440 N did 440 J of work. How many metres did the object move?
  13. 13.🏋️ A 16 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.🏋️ Work is done when a force moves something … (a) without moving it (b) only upwards (c) through a distance (d) very slowly
  15. 15.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A longer ramp to the same height needs … (a) less effort (b) the same effort (c) no effort (d) more effort
  17. 17.🏋️ A force of 150 N did 900 J of work. How many metres did the object move?
  18. 18.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1750 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
  20. 20.🏋️ Pushing a crate 8 m took 560 J of work. What force was used, in newtons?
  21. 21.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A force of 170 N did 1700 J of work. How many metres did the object move?
  23. 23.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ Pushing a crate 8 m took 1760 J of work. What force was used, in newtons?
  26. 26.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ A force of 450 N pushes a cart 10 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A machine lifts a load of 750 N when you push with 150 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ An 11 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ A force of 260 N pushes a cart 8 m along the floor. How much work is done, in joules?
  31. 31.🏋️ A machine lifts a load of 480 N when you push with 80 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A machine lifts a load of 1020 N when you push with 170 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ A force of 360 N did 720 J of work. How many metres did the object move?
  34. 34.🏋️ 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?
  35. 35.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ A 4 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  37. 37.🏋️ A force of 60 N did 480 J of work. How many metres did the object move?
  38. 38.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ A force of 290 N pushes a cart 9 m along the floor. How much work is done, in joules?
  40. 40.🏋️ A force of 70 N did 420 J of work. How many metres did the object move?

Answer key

  1. 2
  2. 900
  3. 950
  4. no, work stays the same
  5. 9
  6. 450
  7. 60
  8. 600
  9. 8
  10. joule (J)
  11. 60
  12. 1
  13. 160
  14. through a distance
  15. 1000
  16. less effort
  17. 6
  18. 350
  19. load ÷ effort
  20. 70
  21. 4
  22. 10
  23. 400
  24. 170
  25. 220
  26. 300
  27. 4500
  28. 5
  29. 110
  30. 2080
  31. 6
  32. 6
  33. 2
  34. 90
  35. 150
  36. 40
  37. 8
  38. 950
  39. 2610
  40. 6

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