← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 177 · 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 20 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  2. 2.🏋️ A force of 300 N pushes a cart 3 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A longer ramp to the same height needs … (a) the same effort (b) less effort (c) more effort (d) no effort
  4. 4.🏋️ Pushing a crate 1 m took 300 J of work. What force was used, in newtons?
  5. 5.🏋️ In which unit is work measured? (a) metre (m) (b) watt hour (c) joule (J) (d) newton (N)
  6. 6.🏋️ A machine lifts a load of 650 N when you push with 130 N. What is its mechanical advantage (MA)?
  7. 7.🏋️ A 19 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 force of 320 N did 1280 J of work. How many metres did the object move?
  9. 9.🏋️ A force of 330 N did 660 J of work. How many metres did the object move?
  10. 10.🏋️ A force of 80 N pushes a cart 7 m along the floor. How much work is done, in joules?
  11. 11.🏋️ Pushing a crate 9 m took 1980 J of work. What force was used, in newtons?
  12. 12.🏋️ A force of 80 N pushes a cart 10 m along the floor. How much work is done, in joules?
  13. 13.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) only on Mondays (d) yes, always
  14. 14.🏋️ A force of 190 N pushes a cart 4 m along the floor. How much work is done, in joules?
  15. 15.🏋️ A machine lifts a load of 400 N when you push with 200 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ A force of 430 N did 3440 J of work. How many metres did the object move?
  17. 17.🏋️ A force of 70 N pushes a cart 3 m along the floor. How much work is done, in joules?
  18. 18.🏋️ A force of 100 N did 300 J of work. How many metres did the object move?
  19. 19.🏋️ Pushing a crate 3 m took 300 J of work. What force was used, in newtons?
  20. 20.🏋️ A machine lifts a load of 1020 N when you push with 170 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A force of 110 N pushes a cart 4 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A force of 200 N did 1600 J of work. How many metres did the object move?
  23. 23.🏋️ Pushing a crate 3 m took 420 J of work. What force was used, in newtons?
  24. 24.🏋️ A force of 50 N pushes a cart 9 m along the floor. How much work is done, in joules?
  25. 25.🏋️ A force of 280 N pushes a cart 2 m along the floor. How much work is done, in joules?
  26. 26.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ 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?
  29. 29.🏋️ A force of 30 N did 270 J of work. How many metres did the object move?
  30. 30.🏋️ Pushing a crate 10 m took 1700 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 30 N did 150 J of work. How many metres did the object move?
  32. 32.🏋️ A force of 120 N pushes a cart 6 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A 12 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  34. 34.🏋️ 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)
  35. 35.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ Pushing a crate 8 m took 2000 J of work. What force was used, in newtons?
  37. 37.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  38. 38.🏋️ A machine lifts a load of 200 N when you push with 50 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 380 N pushes a cart 6 m along the floor. How much work is done, in joules?
  40. 40.🏋️ A force of 420 N pushes a cart 8 m along the floor. How much work is done, in joules?

Answer key

  1. 400
  2. 900
  3. less effort
  4. 300
  5. joule (J)
  6. 5
  7. 380
  8. 4
  9. 2
  10. 560
  11. 220
  12. 800
  13. no, work stays the same
  14. 760
  15. 2
  16. 8
  17. 210
  18. 3
  19. 100
  20. 6
  21. 440
  22. 8
  23. 140
  24. 450
  25. 560
  26. 750
  27. 750
  28. 320
  29. 9
  30. 170
  31. 5
  32. 720
  33. 600
  34. 900
  35. 5
  36. 250
  37. 900
  38. 4
  39. 2280
  40. 3360

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