← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 311 · 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 5 m long and rises 1 m. What effort pushes a 4250 N box up it, in newtons? (ideal ramp, no friction)
  2. 2.🏋️ In which unit is work measured? (a) metre (m) (b) newton (N) (c) joule (J) (d) watt hour
  3. 3.🏋️ A force of 90 N pushes a cart 7 m along the floor. How much work is done, in joules?
  4. 4.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  5. 5.🏋️ 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?
  6. 6.🏋️ Pushing a crate 3 m took 210 J of work. What force was used, in newtons?
  7. 7.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
  8. 8.🏋️ Work is done when a force moves something … (a) without moving it (b) through a distance (c) very slowly (d) only upwards
  9. 9.🏋️ A machine lifts a load of 140 N when you push with 70 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ Pushing a crate 2 m took 40 J of work. What force was used, in newtons?
  11. 11.🏋️ A force of 220 N pushes a cart 5 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A machine lifts a load of 240 N when you push with 60 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A force of 380 N did 3800 J of work. How many metres did the object move?
  14. 14.🏋️ A force of 500 N did 500 J of work. How many metres did the object move?
  15. 15.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
  17. 17.🏋️ A 14 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A 6 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  20. 20.🏋️ A machine lifts a load of 480 N when you push with 160 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ Pushing a crate 10 m took 1300 J of work. What force was used, in newtons?
  22. 22.🏋️ A force of 420 N pushes a cart 5 m along the floor. How much work is done, in joules?
  23. 23.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ A force of 10 N did 90 J of work. How many metres did the object move?
  26. 26.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, always (c) yes, by half (d) no, work stays the same
  27. 27.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  28. 28.🏋️ A 17 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  29. 29.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ Pushing a crate 5 m took 550 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 350 N pushes a cart 8 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 1100 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A 3 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ 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)
  38. 38.🏋️ A force of 130 N did 130 J of work. How many metres did the object move?
  39. 39.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ A machine lifts a load of 560 N when you push with 140 N. What is its mechanical advantage (MA)?

Answer key

  1. 850
  2. joule (J)
  3. 630
  4. 300
  5. 160
  6. 70
  7. 850
  8. through a distance
  9. 2
  10. 20
  11. 1100
  12. 4
  13. 10
  14. 1
  15. 6
  16. load ÷ effort
  17. 140
  18. 600
  19. 300
  20. 3
  21. 130
  22. 2100
  23. 400
  24. 450
  25. 9
  26. no, work stays the same
  27. 400
  28. 510
  29. 100
  30. 110
  31. 2800
  32. 550
  33. 150
  34. 90
  35. 5
  36. 850
  37. 350
  38. 1
  39. 80
  40. 4

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