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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 589 · 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.🏋️ Work is done when a force moves something … (a) very slowly (b) only upwards (c) through a distance (d) without moving it
  2. 2.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 700 N box up it, in newtons? (ideal ramp, no friction)
  3. 3.🏋️ A force of 360 N pushes a cart 8 m along the floor. How much work is done, in joules?
  4. 4.🏋️ A 19 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  5. 5.🏋️ A force of 200 N did 800 J of work. How many metres did the object move?
  6. 6.🏋️ A force of 70 N pushes a cart 4 m along the floor. How much work is done, in joules?
  7. 7.🏋️ A force of 150 N pushes a cart 7 m along the floor. How much work is done, in joules?
  8. 8.🏋️ Mechanical advantage (MA) = … (a) load + effort (b) load × effort (c) load ÷ effort (d) effort ÷ load
  9. 9.🏋️ A force of 130 N did 1170 J of work. How many metres did the object move?
  10. 10.🏋️ 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?
  11. 11.🏋️ Pushing a crate 7 m took 980 J of work. What force was used, in newtons?
  12. 12.🏋️ Pushing a crate 3 m took 750 J of work. What force was used, in newtons?
  13. 13.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A force of 30 N pushes a cart 7 m along the floor. How much work is done, in joules?
  15. 15.🏋️ 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
  16. 16.🏋️ A force of 200 N did 1600 J of work. How many metres did the object move?
  17. 17.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes an 800 N box up it, in newtons? (ideal ramp, no friction)
  18. 18.🏋️ A force of 160 N did 960 J of work. How many metres did the object move?
  19. 19.🏋️ Pushing a crate 7 m took 1820 J of work. What force was used, in newtons?
  20. 20.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
  21. 21.🏋️ A force of 410 N pushes a cart 8 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A smooth ramp is 15 m long and rises 3 m. What effort pushes a 5000 N box up it, in newtons? (ideal ramp, no friction)
  23. 23.🏋️ A force of 230 N did 2300 J of work. How many metres did the object move?
  24. 24.🏋️ A force of 490 N did 490 J of work. How many metres did the object move?
  25. 25.🏋️ Pushing a crate 6 m took 1320 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 310 N pushes a cart 2 m along the floor. How much work is done, in joules?
  27. 27.🏋️ 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?
  28. 28.🏋️ A force of 430 N did 4300 J of work. How many metres did the object move?
  29. 29.🏋️ A 19 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  30. 30.🏋️ Pushing a crate 7 m took 1120 J of work. What force was used, in newtons?
  31. 31.🏋️ A force of 50 N pushes a cart 5 m along the floor. How much work is done, in joules?
  32. 32.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1250 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ 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?
  34. 34.🏋️ Pushing a crate 9 m took 270 J of work. What force was used, in newtons?
  35. 35.🏋️ A machine lifts a load of 360 N when you push with 90 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 4800 N box up it, in newtons? (ideal ramp, no friction)
  37. 37.🏋️ In which unit is work measured? (a) joule (J) (b) watt hour (c) newton (N) (d) metre (m)
  38. 38.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 350 N did 700 J of work. How many metres did the object move?
  40. 40.🏋️ 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)

Answer key

  1. through a distance
  2. 350
  3. 2880
  4. 950
  5. 4
  6. 280
  7. 1050
  8. load ÷ effort
  9. 9
  10. 180
  11. 140
  12. 250
  13. 600
  14. 210
  15. no, work stays the same
  16. 8
  17. 200
  18. 6
  19. 260
  20. 2
  21. 3280
  22. 1000
  23. 10
  24. 1
  25. 220
  26. 620
  27. 40
  28. 10
  29. 570
  30. 160
  31. 250
  32. 250
  33. 100
  34. 30
  35. 4
  36. 800
  37. joule (J)
  38. 2
  39. 2
  40. 50

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