← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 119 · 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.🏋️ Pushing a crate 5 m took 150 J of work. What force was used, in newtons?
  2. 2.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ Pushing a crate 4 m took 1280 J of work. What force was used, in newtons?
  4. 4.🏋️ A machine lifts a load of 800 N when you push with 160 N. What is its mechanical advantage (MA)?
  5. 5.🏋️ A machine lifts a load of 1200 N when you push with 200 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ Pushing a crate 8 m took 240 J of work. What force was used, in newtons?
  7. 7.🏋️ A force of 310 N pushes a cart 6 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1900 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A force of 130 N pushes a cart 9 m along the floor. How much work is done, in joules?
  11. 11.🏋️ A force of 410 N pushes a cart 1 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A machine lifts a load of 500 N when you push with 100 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) yes, always (d) only on Mondays
  15. 15.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3500 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A force of 240 N pushes a cart 8 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A 3 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A force of 320 N did 320 J of work. How many metres did the object move?
  20. 20.🏋️ A force of 180 N did 540 J of work. How many metres did the object move?
  21. 21.🏋️ A force of 200 N did 600 J of work. How many metres did the object move?
  22. 22.🏋️ In which unit is work measured? (a) newton (N) (b) watt hour (c) joule (J) (d) metre (m)
  23. 23.🏋️ A force of 330 N did 330 J of work. How many metres did the object move?
  24. 24.🏋️ A longer ramp to the same height needs … (a) the same effort (b) more effort (c) less effort (d) no effort
  25. 25.🏋️ An 18 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ Pushing a crate 8 m took 2880 J of work. What force was used, in newtons?
  28. 28.🏋️ A force of 30 N pushes a cart 10 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 2850 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A force of 410 N pushes a cart 8 m along the floor. How much work is done, in joules?
  31. 31.🏋️ A 1 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ Work is done when a force moves something … (a) very slowly (b) through a distance (c) only upwards (d) without moving it
  33. 33.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  34. 34.🏋️ A force of 180 N pushes a cart 5 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1000 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ Pushing a crate 10 m took 500 J of work. What force was used, in newtons?
  37. 37.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load + effort (d) load ÷ effort
  38. 38.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ Pushing a crate 7 m took 2800 J of work. What force was used, in newtons?
  40. 40.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)

Answer key

  1. 30
  2. 450
  3. 320
  4. 5
  5. 6
  6. 30
  7. 1860
  8. 950
  9. 600
  10. 1170
  11. 410
  12. 5
  13. 450
  14. no, work stays the same
  15. 700
  16. 1920
  17. 700
  18. 120
  19. 1
  20. 3
  21. 3
  22. joule (J)
  23. 1
  24. less effort
  25. 900
  26. 100
  27. 360
  28. 300
  29. 950
  30. 3280
  31. 40
  32. through a distance
  33. 6
  34. 900
  35. 200
  36. 50
  37. load ÷ effort
  38. 4
  39. 400
  40. 400

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