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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 858 · 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 longer ramp to the same height needs … (a) more effort (b) the same effort (c) no effort (d) less effort
  2. 2.🏋️ A machine lifts a load of 550 N when you push with 110 N. What is its mechanical advantage (MA)?
  3. 3.🏋️ Pushing a crate 3 m took 270 J of work. What force was used, in newtons?
  4. 4.🏋️ A force of 240 N pushes a cart 10 m along the floor. How much work is done, in joules?
  5. 5.🏋️ A force of 370 N did 370 J of work. How many metres did the object move?
  6. 6.🏋️ A force of 400 N did 2400 J of work. How many metres did the object move?
  7. 7.🏋️ A machine lifts a load of 150 N when you push with 50 N. What is its mechanical advantage (MA)?
  8. 8.🏋️ Work is done when a force moves something … (a) very slowly (b) through a distance (c) without moving it (d) only upwards
  9. 9.🏋️ A force of 150 N pushes a cart 4 m along the floor. How much work is done, in joules?
  10. 10.🏋️ A 17 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  11. 11.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load + effort (c) load × effort (d) effort ÷ load
  12. 12.🏋️ Can a simple machine reduce the work done? (a) yes, by half (b) yes, always (c) no, work stays the same (d) only on Mondays
  13. 13.🏋️ Pushing a crate 2 m took 840 J of work. What force was used, in newtons?
  14. 14.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 600 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A 2 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 60 N did 180 J of work. How many metres did the object move?
  17. 17.🏋️ Pushing a crate 1 m took 110 J of work. What force was used, in newtons?
  18. 18.🏋️ A force of 460 N pushes a cart 1 m along the floor. How much work is done, in joules?
  19. 19.🏋️ A machine lifts a load of 120 N when you push with 40 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ A force of 470 N pushes a cart 5 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A force of 330 N pushes a cart 1 m along the floor. How much work is done, in joules?
  22. 22.🏋️ An 8 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  23. 23.🏋️ A 7 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  24. 24.🏋️ A force of 330 N did 1980 J of work. How many metres did the object move?
  25. 25.🏋️ An 11 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 180 N when you push with 90 N. What is its mechanical advantage (MA)?
  27. 27.🏋️ A force of 180 N pushes a cart 10 m along the floor. How much work is done, in joules?
  28. 28.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
  29. 29.🏋️ A force of 180 N did 720 J of work. How many metres did the object move?
  30. 30.🏋️ 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?
  31. 31.🏋️ 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)
  32. 32.🏋️ A smooth ramp is 6 m long and rises 3 m. What effort pushes a 500 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A force of 150 N pushes a cart 3 m along the floor. How much work is done, in joules?
  34. 34.🏋️ An 18 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 340 N when you push with 170 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A force of 320 N did 2240 J of work. How many metres did the object move?
  37. 37.🏋️ Pushing a crate 3 m took 1140 J of work. What force was used, in newtons?
  38. 38.🏋️ A force of 30 N did 180 J of work. How many metres did the object move?
  39. 39.🏋️ A force of 370 N pushes a cart 8 m along the floor. How much work is done, in joules?
  40. 40.🏋️ Pushing a crate 3 m took 1110 J of work. What force was used, in newtons?

Answer key

  1. less effort
  2. 5
  3. 90
  4. 2400
  5. 1
  6. 6
  7. 3
  8. through a distance
  9. 600
  10. 850
  11. load ÷ effort
  12. no, work stays the same
  13. 420
  14. 100
  15. 40
  16. 3
  17. 110
  18. 460
  19. 3
  20. 2350
  21. 330
  22. 160
  23. 210
  24. 6
  25. 220
  26. 2
  27. 1800
  28. 850
  29. 4
  30. 800
  31. 50
  32. 250
  33. 450
  34. 720
  35. 2
  36. 7
  37. 380
  38. 6
  39. 2960
  40. 370

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