← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 65 · 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.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) effort ÷ load (c) load × effort (d) load ÷ effort
  2. 2.🏋️ A force of 90 N pushes a cart 2 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A force of 410 N did 820 J of work. How many metres did the object move?
  4. 4.🏋️ Pushing a crate 2 m took 880 J of work. What force was used, in newtons?
  5. 5.🏋️ A 13 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.🏋️ A force of 210 N pushes a cart 2 m along the floor. How much work is done, in joules?
  7. 7.🏋️ Pushing a crate 5 m took 800 J of work. What force was used, in newtons?
  8. 8.🏋️ An 11 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A force of 360 N did 2880 J of work. How many metres did the object move?
  10. 10.🏋️ A longer ramp to the same height needs … (a) no effort (b) less effort (c) more effort (d) the same effort
  11. 11.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) no, work stays the same (c) only on Mondays (d) yes, always
  12. 12.🏋️ A force of 160 N did 1120 J of work. How many metres did the object move?
  13. 13.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ In which unit is work measured? (a) watt hour (b) joule (J) (c) newton (N) (d) metre (m)
  15. 15.🏋️ A machine lifts a load of 240 N when you push with 80 N. What is its mechanical advantage (MA)?
  16. 16.🏋️ A machine lifts a load of 40 N when you push with 10 N. What is its mechanical advantage (MA)?
  17. 17.🏋️ A force of 430 N did 1290 J of work. How many metres did the object move?
  18. 18.🏋️ Pushing a crate 9 m took 1800 J of work. What force was used, in newtons?
  19. 19.🏋️ A force of 300 N pushes a cart 8 m along the floor. How much work is done, in joules?
  20. 20.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
  21. 21.🏋️ A machine lifts a load of 200 N when you push with 40 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A force of 360 N did 2520 J of work. How many metres did the object move?
  23. 23.🏋️ A force of 310 N did 2170 J of work. How many metres did the object move?
  24. 24.🏋️ A 10 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  25. 25.🏋️ A 7 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ 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)
  27. 27.🏋️ A force of 120 N pushes a cart 5 m along the floor. How much work is done, in joules?
  28. 28.🏋️ Pushing a crate 10 m took 1600 J of work. What force was used, in newtons?
  29. 29.🏋️ A force of 210 N did 1470 J of work. How many metres did the object move?
  30. 30.🏋️ Pushing a crate 8 m took 3120 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 90 N pushes a cart 9 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A force of 120 N did 360 J of work. How many metres did the object move?
  33. 33.🏋️ 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)
  34. 34.🏋️ A force of 130 N did 130 J of work. How many metres did the object move?
  35. 35.🏋️ A force of 50 N did 350 J of work. How many metres did the object move?
  36. 36.🏋️ A force of 20 N did 100 J of work. How many metres did the object move?
  37. 37.🏋️ A 2 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  38. 38.🏋️ A machine lifts a load of 600 N when you push with 150 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ 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)
  40. 40.🏋️ Pushing a crate 4 m took 1840 J of work. What force was used, in newtons?

Answer key

  1. load ÷ effort
  2. 180
  3. 2
  4. 440
  5. 130
  6. 420
  7. 160
  8. 440
  9. 8
  10. less effort
  11. no, work stays the same
  12. 7
  13. 6
  14. joule (J)
  15. 3
  16. 4
  17. 3
  18. 200
  19. 2400
  20. through a distance
  21. 5
  22. 7
  23. 7
  24. 300
  25. 70
  26. 450
  27. 600
  28. 160
  29. 7
  30. 390
  31. 810
  32. 3
  33. 500
  34. 1
  35. 7
  36. 5
  37. 20
  38. 4
  39. 200
  40. 460

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