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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 709 · 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.🏋️ Pushing a crate 4 m took 1720 J of work. What force was used, in newtons?
  2. 2.🏋️ A force of 490 N pushes a cart 7 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A force of 330 N pushes a cart 5 m along the floor. How much work is done, in joules?
  4. 4.🏋️ Work is done when a force moves something … (a) very slowly (b) without moving it (c) only upwards (d) through a distance
  5. 5.🏋️ Pushing a crate 8 m took 80 J of work. What force was used, in newtons?
  6. 6.🏋️ A force of 180 N pushes a cart 2 m along the floor. How much work is done, in joules?
  7. 7.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  8. 8.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ 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)
  10. 10.🏋️ A force of 370 N pushes a cart 5 m along the floor. How much work is done, in joules?
  11. 11.🏋️ Pushing a crate 2 m took 480 J of work. What force was used, in newtons?
  12. 12.🏋️ In which unit is work measured? (a) newton (N) (b) joule (J) (c) metre (m) (d) watt hour
  13. 13.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, always (c) only on Mondays (d) yes, by half
  14. 14.🏋️ 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?
  15. 15.🏋️ Pushing a crate 6 m took 120 J of work. What force was used, in newtons?
  16. 16.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A force of 460 N pushes a cart 3 m along the floor. How much work is done, in joules?
  18. 18.🏋️ Pushing a crate 5 m took 1500 J of work. What force was used, in newtons?
  19. 19.🏋️ Pushing a crate 1 m took 80 J of work. What force was used, in newtons?
  20. 20.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 400 N box up it, in newtons? (ideal ramp, no friction)
  21. 21.🏋️ A machine lifts a load of 600 N when you push with 100 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ A machine lifts a load of 480 N when you push with 120 N. What is its mechanical advantage (MA)?
  23. 23.🏋️ A machine lifts a load of 720 N when you push with 180 N. What is its mechanical advantage (MA)?
  24. 24.🏋️ 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?
  25. 25.🏋️ 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?
  26. 26.🏋️ A force of 330 N pushes a cart 4 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A 19 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 190 N did 950 J of work. How many metres did the object move?
  29. 29.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A force of 50 N pushes a cart 7 m along the floor. How much work is done, in joules?
  31. 31.🏋️ Pushing a crate 4 m took 1800 J of work. What force was used, in newtons?
  32. 32.🏋️ A machine lifts a load of 80 N when you push with 40 N. What is its mechanical advantage (MA)?
  33. 33.🏋️ A force of 440 N did 2200 J of work. How many metres did the object move?
  34. 34.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 3200 N box up it, in newtons? (ideal ramp, no friction)
  35. 35.🏋️ A 15 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  36. 36.🏋️ Pushing a crate 3 m took 630 J of work. What force was used, in newtons?
  37. 37.🏋️ A force of 80 N pushes a cart 3 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1200 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ A force of 430 N did 860 J of work. How many metres did the object move?
  40. 40.🏋️ A force of 290 N pushes a cart 4 m along the floor. How much work is done, in joules?

Answer key

  1. 430
  2. 3430
  3. 1650
  4. through a distance
  5. 10
  6. 360
  7. 100
  8. 300
  9. 300
  10. 1850
  11. 240
  12. joule (J)
  13. no, work stays the same
  14. 10
  15. 20
  16. 100
  17. 1380
  18. 300
  19. 80
  20. 100
  21. 6
  22. 4
  23. 4
  24. 180
  25. 100
  26. 1320
  27. 380
  28. 5
  29. 500
  30. 350
  31. 450
  32. 2
  33. 5
  34. 800
  35. 600
  36. 210
  37. 240
  38. 600
  39. 2
  40. 1160

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