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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 736 · 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 smooth ramp is 4 m long and rises 2 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  2. 2.🏋️ A machine lifts a load of 760 N when you push with 190 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ Pushing a crate 3 m took 90 J of work. What force was used, in newtons?
  4. 4.🏋️ Pushing a crate 7 m took 1960 J of work. What force was used, in newtons?
  5. 5.🏋️ A force of 90 N did 270 J of work. How many metres did the object move?
  6. 6.🏋️ A force of 80 N pushes a cart 4 m along the floor. How much work is done, in joules?
  7. 7.🏋️ Pushing a crate 8 m took 3040 J of work. What force was used, in newtons?
  8. 8.🏋️ Pushing a crate 6 m took 960 J of work. What force was used, in newtons?
  9. 9.🏋️ Pushing a crate 2 m took 780 J of work. What force was used, in newtons?
  10. 10.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 2400 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ 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?
  12. 12.🏋️ Work is done when a force moves something … (a) through a distance (b) only upwards (c) without moving it (d) very slowly
  13. 13.🏋️ A force of 370 N pushes a cart 2 m along the floor. How much work is done, in joules?
  14. 14.🏋️ Pushing a crate 10 m took 3700 J of work. What force was used, in newtons?
  15. 15.🏋️ A smooth ramp is 4 m long and rises 2 m. What effort pushes a 100 N box up it, in newtons? (ideal ramp, no friction)
  16. 16.🏋️ A machine lifts a load of 1200 N when you push with 200 N. What is its mechanical advantage (MA)?
  17. 17.🏋️ Pushing a crate 2 m took 740 J of work. What force was used, in newtons?
  18. 18.🏋️ A force of 150 N pushes a cart 10 m along the floor. How much work is done, in joules?
  19. 19.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 5000 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A 4 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  22. 22.🏋️ A machine lifts a load of 20 N when you push with 10 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ A force of 110 N did 330 J of work. How many metres did the object move?
  24. 24.🏋️ 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?
  25. 25.🏋️ A 14 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  26. 26.🏋️ A machine lifts a load of 650 N when you push with 130 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A force of 110 N did 770 J of work. How many metres did the object move?
  28. 28.🏋️ A machine lifts a load of 390 N when you push with 130 N. What is its mechanical advantage (MA)?
  29. 29.🏋️ A machine lifts a load of 1080 N when you push with 180 N. What is its mechanical advantage (MA)?
  30. 30.🏋️ In which unit is work measured? (a) metre (m) (b) joule (J) (c) watt hour (d) newton (N)
  31. 31.🏋️ A force of 140 N pushes a cart 3 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A 2 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  33. 33.🏋️ A force of 420 N did 2100 J of work. How many metres did the object move?
  34. 34.🏋️ A 3 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A smooth ramp is 10 m long and rises 2 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  36. 36.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5700 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ 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)
  38. 38.🏋️ A 7 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  39. 39.🏋️ A force of 240 N did 480 J of work. How many metres did the object move?
  40. 40.🏋️ Pushing a crate 1 m took 370 J of work. What force was used, in newtons?

Answer key

  1. 750
  2. 4
  3. 30
  4. 280
  5. 3
  6. 320
  7. 380
  8. 160
  9. 390
  10. 600
  11. 70
  12. through a distance
  13. 740
  14. 370
  15. 50
  16. 6
  17. 370
  18. 1500
  19. 2
  20. 1000
  21. 40
  22. 2
  23. 3
  24. 130
  25. 280
  26. 5
  27. 7
  28. 3
  29. 6
  30. joule (J)
  31. 420
  32. 80
  33. 5
  34. 30
  35. 250
  36. 950
  37. 450
  38. 350
  39. 2
  40. 370

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