← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 61 · 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.🏋️ In which unit is work measured? (a) joule (J) (b) newton (N) (c) metre (m) (d) watt hour
  2. 2.🏋️ Pushing a crate 5 m took 550 J of work. What force was used, in newtons?
  3. 3.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load ÷ effort (c) load × effort (d) effort ÷ load
  4. 4.🏋️ A force of 460 N did 4140 J of work. How many metres did the object move?
  5. 5.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) yes, by half (c) no, work stays the same (d) only on Mondays
  6. 6.🏋️ A force of 170 N did 170 J of work. How many metres did the object move?
  7. 7.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
  8. 8.🏋️ A force of 310 N pushes a cart 1 m along the floor. How much work is done, in joules?
  9. 9.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A force of 20 N pushes a cart 10 m along the floor. How much work is done, in joules?
  11. 11.🏋️ Pushing a crate 2 m took 420 J of work. What force was used, in newtons?
  12. 12.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A force of 160 N pushes a cart 2 m along the floor. How much work is done, in joules?
  14. 14.🏋️ Pushing a crate 1 m took 180 J of work. What force was used, in newtons?
  15. 15.🏋️ 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?
  16. 16.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A machine lifts a load of 300 N when you push with 150 N. What is its mechanical advantage (MA)?
  19. 19.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  20. 20.🏋️ A force of 210 N pushes a cart 10 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A machine lifts a load of 260 N when you push with 130 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A machine lifts a load of 340 N when you push with 170 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
  24. 24.🏋️ Pushing a crate 8 m took 3920 J of work. What force was used, in newtons?
  25. 25.🏋️ A force of 160 N did 1280 J of work. How many metres did the object move?
  26. 26.🏋️ Pushing a crate 7 m took 1680 J of work. What force was used, in newtons?
  27. 27.🏋️ Pushing a crate 4 m took 1040 J of work. What force was used, in newtons?
  28. 28.🏋️ A force of 30 N pushes a cart 4 m along the floor. How much work is done, in joules?
  29. 29.🏋️ An 11 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ Pushing a crate 9 m took 2250 J of work. What force was used, in newtons?
  31. 31.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  32. 32.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 130 N did 910 J of work. How many metres did the object move?
  34. 34.🏋️ A force of 90 N pushes a cart 3 m along the floor. How much work is done, in joules?
  35. 35.🏋️ Pushing a crate 4 m took 1160 J of work. What force was used, in newtons?
  36. 36.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1950 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A force of 80 N pushes a cart 1 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 20 N did 200 J of work. How many metres did the object move?
  40. 40.🏋️ A force of 230 N pushes a cart 8 m along the floor. How much work is done, in joules?

Answer key

  1. joule (J)
  2. 110
  3. load ÷ effort
  4. 9
  5. no, work stays the same
  6. 1
  7. 3
  8. 310
  9. 1000
  10. 200
  11. 210
  12. 2
  13. 320
  14. 180
  15. 50
  16. 500
  17. 250
  18. 2
  19. 1000
  20. 2100
  21. 2
  22. 2
  23. 2
  24. 490
  25. 8
  26. 240
  27. 260
  28. 120
  29. 220
  30. 250
  31. 100
  32. 300
  33. 7
  34. 270
  35. 290
  36. 650
  37. 80
  38. 2
  39. 10
  40. 1840

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