← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 271 · 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 130 N did 130 J of work. How many metres did the object move?
  2. 2.🏋️ A force of 70 N pushes a cart 2 m along the floor. How much work is done, in joules?
  3. 3.🏋️ Work is done when a force moves something … (a) only upwards (b) very slowly (c) without moving it (d) through a distance
  4. 4.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
  5. 5.🏋️ Mechanical advantage (MA) = … (a) effort ÷ load (b) load ÷ effort (c) load × effort (d) load + effort
  6. 6.🏋️ A force of 320 N pushes a cart 10 m along the floor. How much work is done, in joules?
  7. 7.🏋️ A force of 240 N did 960 J of work. How many metres did the object move?
  8. 8.🏋️ A machine lifts a load of 950 N when you push with 190 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A machine lifts a load of 840 N when you push with 140 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ A 16 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  11. 11.🏋️ A longer ramp to the same height needs … (a) the same effort (b) no effort (c) more effort (d) less effort
  12. 12.🏋️ A 15 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  13. 13.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A force of 260 N pushes a cart 2 m along the floor. How much work is done, in joules?
  15. 15.🏋️ A 16 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  16. 16.🏋️ Pushing a crate 8 m took 720 J of work. What force was used, in newtons?
  17. 17.🏋️ 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?
  18. 18.🏋️ A 15 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A force of 200 N did 200 J of work. How many metres did the object move?
  20. 20.🏋️ An 8 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  21. 21.🏋️ A 13 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  22. 22.🏋️ A force of 450 N did 3600 J of work. How many metres did the object move?
  23. 23.🏋️ A 3 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ A force of 70 N did 560 J of work. How many metres did the object move?
  25. 25.🏋️ Pushing a crate 2 m took 300 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 80 N pushes a cart 7 m along the floor. How much work is done, in joules?
  27. 27.🏋️ 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?
  28. 28.🏋️ A machine lifts a load of 1020 N when you push with 170 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ Pushing a crate 2 m took 360 J of work. What force was used, in newtons?
  30. 30.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, by half (c) yes, always (d) no, work stays the same
  32. 32.🏋️ A force of 190 N pushes a cart 10 m along the floor. How much work is done, in joules?
  33. 33.🏋️ Pushing a crate 2 m took 860 J of work. What force was used, in newtons?
  34. 34.🏋️ A force of 130 N pushes a cart 9 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A force of 110 N pushes a cart 5 m along the floor. How much work is done, in joules?
  36. 36.🏋️ Pushing a crate 5 m took 600 J of work. What force was used, in newtons?
  37. 37.🏋️ In which unit is work measured? (a) watt hour (b) metre (m) (c) joule (J) (d) newton (N)
  38. 38.🏋️ A force of 500 N did 2500 J of work. How many metres did the object move?
  39. 39.🏋️ A machine lifts a load of 600 N when you push with 120 N. What is its mechanical advantage (MA)?
  40. 40.🏋️ 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)

Answer key

  1. 1
  2. 140
  3. through a distance
  4. 3
  5. load ÷ effort
  6. 3200
  7. 4
  8. 5
  9. 6
  10. 800
  11. less effort
  12. 300
  13. 1000
  14. 520
  15. 640
  16. 90
  17. 160
  18. 150
  19. 1
  20. 320
  21. 650
  22. 8
  23. 150
  24. 8
  25. 150
  26. 560
  27. 50
  28. 6
  29. 180
  30. 200
  31. no, work stays the same
  32. 1900
  33. 430
  34. 1170
  35. 550
  36. 120
  37. joule (J)
  38. 5
  39. 5
  40. 300

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