← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 933 · 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 200 N did 200 J of work. How many metres did the object move?
  2. 2.🏋️ A force of 210 N did 210 J of work. How many metres did the object move?
  3. 3.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 2500 N box up it, in newtons? (ideal ramp, no friction)
  4. 4.🏋️ A force of 240 N pushes a cart 2 m along the floor. How much work is done, in joules?
  5. 5.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) only on Mondays (c) yes, always (d) no, work stays the same
  6. 6.🏋️ Work is done when a force moves something … (a) only upwards (b) through a distance (c) very slowly (d) without moving it
  7. 7.🏋️ A machine lifts a load of 440 N when you push with 110 N. What is its mechanical advantage (MA)?
  8. 8.🏋️ A force of 270 N did 2160 J of work. How many metres did the object move?
  9. 9.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
  11. 11.🏋️ A force of 350 N did 1750 J of work. How many metres did the object move?
  12. 12.🏋️ A machine lifts a load of 280 N when you push with 70 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A force of 190 N did 760 J of work. How many metres did the object move?
  14. 14.🏋️ A force of 70 N did 700 J of work. How many metres did the object move?
  15. 15.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
  16. 16.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) watt hour (d) joule (J)
  17. 17.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A force of 400 N pushes a cart 10 m along the floor. How much work is done, in joules?
  19. 19.🏋️ A machine lifts a load of 240 N when you push with 120 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A 7 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  22. 22.🏋️ 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?
  23. 23.🏋️ A force of 380 N did 380 J of work. How many metres did the object move?
  24. 24.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load × effort (c) load ÷ effort (d) load + effort
  25. 25.🏋️ Pushing a crate 2 m took 960 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 10 N did 80 J of work. How many metres did the object move?
  27. 27.🏋️ A force of 230 N pushes a cart 7 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A machine lifts a load of 1200 N when you push with 200 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ A force of 280 N pushes a cart 5 m along the floor. How much work is done, in joules?
  30. 30.🏋️ 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?
  31. 31.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ 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?
  34. 34.🏋️ A force of 150 N did 450 J of work. How many metres did the object move?
  35. 35.🏋️ Pushing a crate 4 m took 1400 J of work. What force was used, in newtons?
  36. 36.🏋️ A 12 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  37. 37.🏋️ A force of 480 N did 2880 J of work. How many metres did the object move?
  38. 38.🏋️ Pushing a crate 4 m took 840 J of work. What force was used, in newtons?
  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 390 N pushes a cart 10 m along the floor. How much work is done, in joules?

Answer key

  1. 1
  2. 1
  3. 500
  4. 480
  5. no, work stays the same
  6. through a distance
  7. 4
  8. 8
  9. 5
  10. 3
  11. 5
  12. 4
  13. 4
  14. 10
  15. less effort
  16. joule (J)
  17. 600
  18. 4000
  19. 2
  20. 200
  21. 350
  22. 720
  23. 1
  24. load ÷ effort
  25. 480
  26. 8
  27. 1610
  28. 6
  29. 1400
  30. 60
  31. 2
  32. 600
  33. 240
  34. 3
  35. 350
  36. 480
  37. 6
  38. 210
  39. 450
  40. 3900

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