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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 972 · 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 290 N pushes a cart 2 m along the floor. How much work is done, in joules?
  2. 2.🏋️ A force of 90 N pushes a cart 1 m along the floor. How much work is done, in joules?
  3. 3.🏋️ In which unit is work measured? (a) newton (N) (b) metre (m) (c) watt hour (d) joule (J)
  4. 4.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  5. 5.🏋️ Pushing a crate 5 m took 2500 J of work. What force was used, in newtons?
  6. 6.🏋️ A smooth ramp is 3 m long and rises 1 m. What effort pushes a 2550 N box up it, in newtons? (ideal ramp, no friction)
  7. 7.🏋️ A force of 440 N pushes a cart 9 m along the floor. How much work is done, in joules?
  8. 8.🏋️ A 4 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  9. 9.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 3000 N box up it, in newtons? (ideal ramp, no friction)
  10. 10.🏋️ A force of 40 N pushes a cart 10 m along the floor. How much work is done, in joules?
  11. 11.🏋️ Pushing a crate 6 m took 1500 J of work. What force was used, in newtons?
  12. 12.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 1600 N box up it, in newtons? (ideal ramp, no friction)
  13. 13.🏋️ A machine lifts a load of 360 N when you push with 60 N. What is its mechanical advantage (MA)?
  14. 14.🏋️ A force of 230 N pushes a cart 10 m along the floor. How much work is done, in joules?
  15. 15.🏋️ 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?
  16. 16.🏋️ A force of 130 N pushes a cart 2 m along the floor. How much work is done, in joules?
  17. 17.🏋️ A machine lifts a load of 60 N when you push with 20 N. What is its mechanical advantage (MA)?
  18. 18.🏋️ A 14 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A force of 80 N did 800 J of work. How many metres did the object move?
  20. 20.🏋️ A force of 370 N pushes a cart 7 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A machine lifts a load of 60 N when you push with 10 N. What is its mechanical advantage (MA)?
  22. 22.🏋️ Can a simple machine reduce the work done? (a) no, work stays the same (b) yes, by half (c) yes, always (d) only on Mondays
  23. 23.🏋️ A force of 120 N pushes a cart 3 m along the floor. How much work is done, in joules?
  24. 24.🏋️ Work is done when a force moves something … (a) only upwards (b) without moving it (c) through a distance (d) very slowly
  25. 25.🏋️ Pushing a crate 7 m took 140 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 490 N pushes a cart 5 m along the floor. How much work is done, in joules?
  27. 27.🏋️ A force of 150 N did 300 J of work. How many metres did the object move?
  28. 28.🏋️ A longer ramp to the same height needs … (a) more effort (b) less effort (c) the same effort (d) no effort
  29. 29.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 900 N box up it, in newtons? (ideal ramp, no friction)
  30. 30.🏋️ A force of 200 N did 1000 J of work. How many metres did the object move?
  31. 31.🏋️ A 20 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  32. 32.🏋️ A force of 290 N pushes a cart 3 m along the floor. How much work is done, in joules?
  33. 33.🏋️ A force of 320 N pushes a cart 6 m along the floor. How much work is done, in joules?
  34. 34.🏋️ A force of 30 N pushes a cart 1 m along the floor. How much work is done, in joules?
  35. 35.🏋️ Pushing a crate 4 m took 600 J of work. What force was used, in newtons?
  36. 36.🏋️ A force of 190 N did 1330 J of work. How many metres did the object move?
  37. 37.🏋️ A force of 220 N pushes a cart 2 m along the floor. How much work is done, in joules?
  38. 38.🏋️ A force of 490 N pushes a cart 1 m along the floor. How much work is done, in joules?
  39. 39.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 4800 N box up it, in newtons? (ideal ramp, no friction)
  40. 40.🏋️ A force of 140 N pushes a cart 5 m along the floor. How much work is done, in joules?

Answer key

  1. 580
  2. 90
  3. joule (J)
  4. 600
  5. 500
  6. 850
  7. 3960
  8. 200
  9. 1000
  10. 400
  11. 250
  12. 800
  13. 6
  14. 2300
  15. 140
  16. 260
  17. 3
  18. 420
  19. 10
  20. 2590
  21. 6
  22. no, work stays the same
  23. 360
  24. through a distance
  25. 20
  26. 2450
  27. 2
  28. less effort
  29. 450
  30. 5
  31. 1000
  32. 870
  33. 1920
  34. 30
  35. 150
  36. 7
  37. 440
  38. 490
  39. 800
  40. 700

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