← Mechanical advantage and work lesson New set →

Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 373 · 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 machine lifts a load of 450 N when you push with 150 N. What is its mechanical advantage (MA)?
  2. 2.🏋️ A force of 100 N pushes a cart 5 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A 6 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  4. 4.🏋️ 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?
  5. 5.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) very slowly (d) without moving it
  7. 7.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  8. 8.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) only on Mondays (d) no, work stays the same
  9. 9.🏋️ A smooth ramp is 9 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ Pushing a crate 1 m took 70 J of work. What force was used, in newtons?
  11. 11.🏋️ A force of 80 N pushes a cart 5 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A force of 220 N pushes a cart 9 m along the floor. How much work is done, in joules?
  13. 13.🏋️ Pushing a crate 6 m took 1800 J of work. What force was used, in newtons?
  14. 14.🏋️ A force of 100 N pushes a cart 10 m along the floor. How much work is done, in joules?
  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 4 m long and rises 1 m. What effort pushes a 3600 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ 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?
  18. 18.🏋️ A force of 390 N did 1950 J of work. How many metres did the object move?
  19. 19.🏋️ A force of 490 N did 1960 J of work. How many metres did the object move?
  20. 20.🏋️ Pushing a crate 2 m took 940 J of work. What force was used, in newtons?
  21. 21.🏋️ Pushing a crate 3 m took 1230 J of work. What force was used, in newtons?
  22. 22.🏋️ A force of 210 N did 840 J of work. How many metres did the object move?
  23. 23.🏋️ A force of 430 N pushes a cart 1 m along the floor. How much work is done, in joules?
  24. 24.🏋️ A force of 60 N did 540 J of work. How many metres did the object move?
  25. 25.🏋️ A 2 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 4750 N box up it, in newtons? (ideal ramp, no friction)
  27. 27.🏋️ A 7 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  28. 28.🏋️ A force of 130 N pushes a cart 1 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A machine lifts a load of 1080 N when you push with 180 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ A longer ramp to the same height needs … (a) less effort (b) more effort (c) no effort (d) the same effort
  31. 31.🏋️ A force of 310 N did 2790 J of work. How many metres did the object move?
  32. 32.🏋️ Pushing a crate 9 m took 810 J of work. What force was used, in newtons?
  33. 33.🏋️ A force of 140 N did 840 J of work. How many metres did the object move?
  34. 34.🏋️ A machine lifts a load of 240 N when you push with 40 N. What is its mechanical advantage (MA)?
  35. 35.🏋️ A machine lifts a load of 180 N when you push with 90 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A force of 80 N did 560 J of work. How many metres did the object move?
  37. 37.🏋️ A force of 340 N pushes a cart 1 m along the floor. How much work is done, in joules?
  38. 38.🏋️ 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)
  39. 39.🏋️ A machine lifts a load of 800 N when you push with 200 N. What is its mechanical advantage (MA)?
  40. 40.🏋️ A force of 170 N did 510 J of work. How many metres did the object move?

Answer key

  1. 3
  2. 500
  3. 300
  4. 640
  5. 150
  6. through a distance
  7. 700
  8. no, work stays the same
  9. 200
  10. 70
  11. 400
  12. 1980
  13. 300
  14. 1000
  15. 10
  16. 900
  17. 40
  18. 5
  19. 4
  20. 470
  21. 410
  22. 4
  23. 430
  24. 9
  25. 60
  26. 950
  27. 140
  28. 130
  29. 6
  30. less effort
  31. 9
  32. 90
  33. 6
  34. 6
  35. 2
  36. 7
  37. 340
  38. 600
  39. 4
  40. 3

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