← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 766 · 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 490 N pushes a cart 9 m along the floor. How much work is done, in joules?
  2. 2.🏋️ A force of 370 N pushes a cart 3 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A force of 220 N did 1320 J of work. How many metres did the object move?
  4. 4.🏋️ A force of 370 N did 2220 J of work. How many metres did the object move?
  5. 5.🏋️ A 17 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  6. 6.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 3900 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  8. 8.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A machine lifts a load of 1080 N when you push with 180 N. What is its mechanical advantage (MA)?
  10. 10.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 3400 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  12. 12.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) metre (m) (d) watt hour
  13. 13.🏋️ A force of 270 N did 540 J of work. How many metres did the object move?
  14. 14.🏋️ A 1 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  15. 15.🏋️ A force of 440 N pushes a cart 3 m along the floor. How much work is done, in joules?
  16. 16.🏋️ A 3 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  17. 17.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
  18. 18.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) effort ÷ load (c) load ÷ effort (d) load + effort
  19. 19.🏋️ A force of 370 N did 2960 J of work. How many metres did the object move?
  20. 20.🏋️ A force of 440 N pushes a cart 2 m along the floor. How much work is done, in joules?
  21. 21.🏋️ Pushing a crate 8 m took 1760 J of work. What force was used, in newtons?
  22. 22.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A 6 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ A force of 420 N pushes a cart 5 m along the floor. How much work is done, in joules?
  25. 25.🏋️ A force of 160 N pushes a cart 1 m along the floor. How much work is done, in joules?
  26. 26.🏋️ Pushing a crate 1 m took 240 J of work. What force was used, in newtons?
  27. 27.🏋️ Pushing a crate 6 m took 2640 J of work. What force was used, in newtons?
  28. 28.🏋️ A machine lifts a load of 300 N when you push with 60 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ A machine lifts a load of 60 N when you push with 30 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ A force of 100 N did 1000 J of work. How many metres did the object move?
  31. 31.🏋️ Pushing a crate 5 m took 500 J of work. What force was used, in newtons?
  32. 32.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) very slowly (d) through a distance
  33. 33.🏋️ Pushing a crate 4 m took 1560 J of work. What force was used, in newtons?
  34. 34.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  35. 35.🏋️ A machine lifts a load of 320 N when you push with 80 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) yes, by half (c) only on Mondays (d) no, work stays the same
  37. 37.🏋️ A force of 50 N did 100 J of work. How many metres did the object move?
  38. 38.🏋️ A force of 10 N pushes a cart 1 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A 12 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ Pushing a crate 1 m took 260 J of work. What force was used, in newtons?

Answer key

  1. 4410
  2. 1110
  3. 6
  4. 6
  5. 340
  6. 650
  7. 150
  8. 5
  9. 6
  10. 850
  11. 500
  12. joule (J)
  13. 2
  14. 20
  15. 1320
  16. 60
  17. less effort
  18. load ÷ effort
  19. 8
  20. 880
  21. 220
  22. 300
  23. 180
  24. 2100
  25. 160
  26. 240
  27. 440
  28. 5
  29. 2
  30. 10
  31. 100
  32. through a distance
  33. 390
  34. 600
  35. 4
  36. no, work stays the same
  37. 2
  38. 10
  39. 120
  40. 260

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