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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 277 · 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 20 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  2. 2.🏋️ A force of 410 N did 410 J of work. How many metres did the object move?
  3. 3.🏋️ A machine lifts a load of 960 N when you push with 160 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ A force of 90 N did 810 J of work. How many metres did the object move?
  5. 5.🏋️ A machine lifts a load of 200 N when you push with 50 N. What is its mechanical advantage (MA)?
  6. 6.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 3500 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ Pushing a crate 2 m took 880 J of work. What force was used, in newtons?
  8. 8.🏋️ Pushing a crate 1 m took 280 J of work. What force was used, in newtons?
  9. 9.🏋️ Can a simple machine reduce the work done? (a) yes, always (b) only on Mondays (c) no, work stays the same (d) yes, by half
  10. 10.🏋️ A machine lifts a load of 600 N when you push with 100 N. What is its mechanical advantage (MA)?
  11. 11.🏋️ A force of 200 N pushes a cart 2 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A machine lifts a load of 350 N when you push with 70 N. What is its mechanical advantage (MA)?
  13. 13.🏋️ 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?
  14. 14.🏋️ A 10 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  15. 15.🏋️ A force of 150 N pushes a cart 6 m along the floor. How much work is done, in joules?
  16. 16.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) without moving it (d) through a distance
  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 smooth ramp is 6 m long and rises 2 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  19. 19.🏋️ A force of 280 N pushes a cart 10 m along the floor. How much work is done, in joules?
  20. 20.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 300 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 200 N box up it, in newtons? (ideal ramp, no friction)
  22. 22.🏋️ Pushing a crate 2 m took 600 J of work. What force was used, in newtons?
  23. 23.🏋️ 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)
  24. 24.🏋️ A force of 70 N pushes a cart 8 m along the floor. How much work is done, in joules?
  25. 25.🏋️ A force of 110 N did 110 J of work. How many metres did the object move?
  26. 26.🏋️ A force of 230 N pushes a cart 6 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A force of 420 N pushes a cart 1 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A force of 210 N pushes a cart 2 m along the floor. How much work is done, in joules?
  29. 29.🏋️ A 9 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 2250 N box up it, in newtons? (ideal ramp, no friction)
  31. 31.🏋️ A 5 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ Pushing a crate 2 m took 440 J of work. What force was used, in newtons?
  33. 33.🏋️ A machine lifts a load of 520 N when you push with 130 N. What is its mechanical advantage (MA)?
  34. 34.🏋️ Pushing a crate 5 m took 1200 J of work. What force was used, in newtons?
  35. 35.🏋️ A force of 290 N pushes a cart 2 m along the floor. How much work is done, in joules?
  36. 36.🏋️ 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)
  37. 37.🏋️ Pushing a crate 6 m took 1380 J of work. What force was used, in newtons?
  38. 38.🏋️ Pushing a crate 4 m took 320 J of work. What force was used, in newtons?
  39. 39.🏋️ A 9 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  40. 40.🏋️ Pushing a crate 6 m took 540 J of work. What force was used, in newtons?

Answer key

  1. 400
  2. 1
  3. 6
  4. 9
  5. 4
  6. 700
  7. 440
  8. 280
  9. no, work stays the same
  10. 6
  11. 400
  12. 5
  13. 800
  14. 100
  15. 900
  16. through a distance
  17. 160
  18. 900
  19. 2800
  20. 50
  21. 50
  22. 300
  23. 200
  24. 560
  25. 1
  26. 1380
  27. 420
  28. 420
  29. 90
  30. 450
  31. 150
  32. 220
  33. 4
  34. 240
  35. 580
  36. 100
  37. 230
  38. 80
  39. 180
  40. 90

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