← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 490 · 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 200 N when you push with 100 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ A 2 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  3. 3.🏋️ A force of 490 N did 4410 J of work. How many metres did the object move?
  4. 4.🏋️ A force of 10 N pushes a cart 3 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A force of 20 N did 200 J of work. How many metres did the object move?
  6. 6.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) only upwards (d) without moving it
  8. 8.🏋️ A machine lifts a load of 390 N when you push with 130 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A machine lifts a load of 760 N when you push with 190 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ 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?
  11. 11.🏋️ A force of 420 N pushes a cart 1 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A force of 10 N did 20 J of work. How many metres did the object move?
  13. 13.🏋️ A force of 330 N pushes a cart 4 m along the floor. How much work is done, in joules?
  14. 14.🏋️ In which unit is work measured? (a) joule (J) (b) metre (m) (c) watt hour (d) newton (N)
  15. 15.🏋️ Pushing a crate 10 m took 4000 J of work. What force was used, in newtons?
  16. 16.🏋️ Pushing a crate 1 m took 110 J of work. What force was used, in newtons?
  17. 17.🏋️ Pushing a crate 5 m took 1450 J of work. What force was used, in newtons?
  18. 18.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) only on Mondays (d) yes, by half
  22. 22.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4200 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A machine lifts a load of 90 N when you push with 30 N. What is its mechanical advantage (MA)?
  24. 24.🏋️ Pushing a crate 9 m took 3060 J of work. What force was used, in newtons?
  25. 25.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1050 N box up it, in newtons? (ideal ramp, no friction)
  26. 26.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load × effort (d) load + effort
  28. 28.🏋️ A force of 460 N pushes a cart 9 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 4500 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A force of 90 N did 720 J of work. How many metres did the object move?
  31. 31.🏋️ A force of 70 N pushes a cart 1 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 70 N pushes a cart 10 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A force of 290 N pushes a cart 5 m along the floor. How much work is done, in joules?
  35. 35.🏋️ Pushing a crate 6 m took 2640 J of work. What force was used, in newtons?
  36. 36.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ 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)
  38. 38.🏋️ 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?
  39. 39.🏋️ A force of 170 N did 170 J of work. How many metres did the object move?
  40. 40.🏋️ A force of 420 N pushes a cart 4 m along the floor. How much work is done, in joules?

Answer key

  1. 2
  2. 100
  3. 9
  4. 30
  5. 10
  6. 450
  7. through a distance
  8. 3
  9. 4
  10. 90
  11. 420
  12. 2
  13. 1320
  14. joule (J)
  15. 400
  16. 110
  17. 290
  18. 100
  19. 100
  20. 6
  21. no, work stays the same
  22. 700
  23. 3
  24. 340
  25. 350
  26. 300
  27. load ÷ effort
  28. 4140
  29. 750
  30. 8
  31. 70
  32. 200
  33. 700
  34. 1450
  35. 440
  36. 450
  37. 600
  38. 30
  39. 1
  40. 1680

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