← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 389 · 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 force of 480 N did 3840 J of work. How many metres did the object move?
  2. 2.🏋️ Pushing a crate 1 m took 340 J of work. What force was used, in newtons?
  3. 3.🏋️ Work is done when a force moves something … (a) through a distance (b) without moving it (c) only upwards (d) very slowly
  4. 4.🏋️ A force of 260 N did 1040 J of work. How many metres did the object move?
  5. 5.🏋️ A machine lifts a load of 900 N when you push with 180 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A force of 190 N pushes a cart 10 m along the floor. How much work is done, in joules?
  7. 7.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load + effort (c) load × effort (d) load ÷ effort
  8. 8.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 2100 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ Pushing a crate 5 m took 650 J of work. What force was used, in newtons?
  10. 10.🏋️ A force of 370 N pushes a cart 4 m along the floor. How much work is done, in joules?
  11. 11.🏋️ A force of 430 N pushes a cart 5 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) joule (J) (d) watt hour
  14. 14.🏋️ A force of 40 N did 80 J of work. How many metres did the object move?
  15. 15.🏋️ A 1 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ Pushing a crate 8 m took 3920 J of work. What force was used, in newtons?
  19. 19.🏋️ A machine lifts a load of 1020 N when you push with 170 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
  22. 22.🏋️ Pushing a crate 7 m took 2100 J of work. What force was used, in newtons?
  23. 23.🏋️ Pushing a crate 2 m took 700 J of work. What force was used, in newtons?
  24. 24.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) only on Mondays (c) yes, always (d) yes, by half
  25. 25.🏋️ Pushing a crate 2 m took 200 J of work. What force was used, in newtons?
  26. 26.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ Pushing a crate 3 m took 600 J of work. What force was used, in newtons?
  28. 28.🏋️ A force of 330 N did 330 J of work. How many metres did the object move?
  29. 29.🏋️ A force of 490 N did 2450 J of work. How many metres did the object move?
  30. 30.🏋️ A machine lifts a load of 480 N when you push with 120 N. What is its mechanical advantage (MA)?
  31. 31.🏋️ A 17 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A machine lifts a load of 360 N when you push with 120 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4800 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A force of 480 N did 4800 J of work. How many metres did the object move?
  35. 35.🏋️ A force of 140 N did 1120 J of work. How many metres did the object move?
  36. 36.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ A machine lifts a load of 30 N when you push with 10 N. What is its mechanical advantage (MA)?
  38. 38.🏋️ An 11 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 10 N did 20 J of work. How many metres did the object move?
  40. 40.🏋️ Pushing a crate 3 m took 1440 J of work. What force was used, in newtons?

Answer key

  1. 8
  2. 340
  3. through a distance
  4. 4
  5. 5
  6. 1900
  7. load ÷ effort
  8. 350
  9. 130
  10. 1480
  11. 2150
  12. 450
  13. joule (J)
  14. 2
  15. 10
  16. 400
  17. 400
  18. 490
  19. 6
  20. 5
  21. less effort
  22. 300
  23. 350
  24. no, work stays the same
  25. 100
  26. 500
  27. 200
  28. 1
  29. 5
  30. 4
  31. 170
  32. 3
  33. 800
  34. 10
  35. 8
  36. 500
  37. 3
  38. 110
  39. 2
  40. 480

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