← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 741 · 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 smooth ramp is 3 m long and rises 1 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  2. 2.🏋️ 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?
  3. 3.🏋️ 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
  4. 4.🏋️ A force of 390 N did 3900 J of work. How many metres did the object move?
  5. 5.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) watt hour (d) joule (J)
  6. 6.🏋️ A machine lifts a load of 850 N when you push with 170 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A machine lifts a load of 330 N when you push with 110 N. What is its mechanical advantage (MA)?
  8. 8.🏋️ A force of 440 N did 2200 J of work. How many metres did the object move?
  9. 9.🏋️ A force of 20 N pushes a cart 5 m along the floor. How much work is done, in joules?
  10. 10.🏋️ A force of 50 N pushes a cart 1 m along the floor. How much work is done, in joules?
  11. 11.🏋️ A force of 420 N pushes a cart 10 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A force of 20 N did 40 J of work. How many metres did the object move?
  13. 13.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load + effort (c) load ÷ effort (d) effort ÷ load
  14. 14.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 2500 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A machine lifts a load of 540 N when you push with 90 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ A machine lifts a load of 360 N when you push with 180 N. What is its mechanical advantage (MA)?
  17. 17.🏋️ A force of 10 N pushes a cart 10 m along the floor. How much work is done, in joules?
  18. 18.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ A force of 110 N did 1100 J of work. How many metres did the object move?
  21. 21.🏋️ Pushing a crate 1 m took 420 J of work. What force was used, in newtons?
  22. 22.🏋️ A 20 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.🏋️ Pushing a crate 9 m took 1890 J of work. What force was used, in newtons?
  24. 24.🏋️ A 3 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.🏋️ A force of 130 N did 130 J of work. How many metres did the object move?
  26. 26.🏋️ A force of 80 N pushes a cart 8 m along the floor. How much work is done, in joules?
  27. 27.🏋️ 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?
  28. 28.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  29. 29.🏋️ A force of 260 N did 520 J of work. How many metres did the object move?
  30. 30.🏋️ Pushing a crate 9 m took 3510 J of work. What force was used, in newtons?
  31. 31.🏋️ 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?
  32. 32.🏋️ Pushing a crate 6 m took 1680 J of work. What force was used, in newtons?
  33. 33.🏋️ A force of 130 N did 780 J of work. How many metres did the object move?
  34. 34.🏋️ A machine lifts a load of 100 N when you push with 20 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A force of 350 N did 1050 J of work. How many metres did the object move?
  36. 36.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ An 18 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  38. 38.🏋️ A force of 40 N did 280 J of work. How many metres did the object move?
  39. 39.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2800 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A force of 480 N did 480 J of work. How many metres did the object move?

Answer key

  1. 850
  2. 240
  3. no, work stays the same
  4. 10
  5. joule (J)
  6. 5
  7. 3
  8. 5
  9. 100
  10. 50
  11. 4200
  12. 2
  13. load ÷ effort
  14. 500
  15. 6
  16. 2
  17. 100
  18. 250
  19. 500
  20. 10
  21. 420
  22. 800
  23. 210
  24. 30
  25. 1
  26. 640
  27. 50
  28. 850
  29. 2
  30. 390
  31. 320
  32. 280
  33. 6
  34. 5
  35. 3
  36. 100
  37. 540
  38. 7
  39. 700
  40. 1

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