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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 614 · 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 170 N did 340 J of work. How many metres did the object move?
  2. 2.🏋️ Pushing a crate 10 m took 600 J of work. What force was used, in newtons?
  3. 3.🏋️ A machine lifts a load of 120 N when you push with 60 N. What is its mechanical advantage (MA)?
  4. 4.🏋️ A longer ramp to the same height needs … (a) less effort (b) the same effort (c) no effort (d) more effort
  5. 5.🏋️ Pushing a crate 10 m took 400 J of work. What force was used, in newtons?
  6. 6.🏋️ A force of 90 N did 90 J of work. How many metres did the object move?
  7. 7.🏋️ A force of 130 N did 260 J of work. How many metres did the object move?
  8. 8.🏋️ A machine lifts a load of 280 N when you push with 70 N. What is its mechanical advantage (MA)?
  9. 9.🏋️ A 2 kg box is lifted straight up by 1 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  10. 10.🏋️ A force of 500 N pushes a cart 2 m along the floor. How much work is done, in joules?
  11. 11.🏋️ A force of 390 N pushes a cart 7 m along the floor. How much work is done, in joules?
  12. 12.🏋️ A 10 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  13. 13.🏋️ A force of 410 N pushes a cart 10 m along the floor. How much work is done, in joules?
  14. 14.🏋️ A smooth ramp is 12 m long and rises 3 m. What effort pushes a 1800 N box up it, in newtons? (ideal ramp, no friction)
  15. 15.🏋️ A force of 150 N pushes a cart 1 m along the floor. How much work is done, in joules?
  16. 16.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 5400 N box up it, in newtons? (ideal ramp, no friction)
  17. 17.🏋️ A 6 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  18. 18.🏋️ A 13 kg box is lifted straight up by 5 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  19. 19.🏋️ A machine lifts a load of 600 N when you push with 200 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ A 17 kg box is lifted straight up by 3 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  21. 21.🏋️ A force of 150 N pushes a cart 5 m along the floor. How much work is done, in joules?
  22. 22.🏋️ A force of 40 N pushes a cart 7 m along the floor. How much work is done, in joules?
  23. 23.🏋️ A smooth ramp is 12 m long and rises 2 m. What effort pushes a 3300 N box up it, in newtons? (ideal ramp, no friction)
  24. 24.🏋️ Pushing a crate 5 m took 1400 J of work. What force was used, in newtons?
  25. 25.🏋️ Pushing a crate 6 m took 1620 J of work. What force was used, in newtons?
  26. 26.🏋️ Mechanical advantage (MA) = … (a) load × effort (b) load ÷ effort (c) load + effort (d) effort ÷ load
  27. 27.🏋️ 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?
  28. 28.🏋️ Pushing a crate 6 m took 120 J of work. What force was used, in newtons?
  29. 29.🏋️ A force of 340 N did 3400 J of work. How many metres did the object move?
  30. 30.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) no, work stays the same (c) yes, by half (d) yes, always
  31. 31.🏋️ A smooth ramp is 6 m long and rises 1 m. What effort pushes a 2700 N box up it, in newtons? (ideal ramp, no friction)
  32. 32.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 250 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 3250 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A force of 370 N did 3700 J of work. How many metres did the object move?
  35. 35.🏋️ 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?
  36. 36.🏋️ A force of 130 N did 520 J of work. How many metres did the object move?
  37. 37.🏋️ A machine lifts a load of 160 N when you push with 40 N. What is its mechanical advantage (MA)?
  38. 38.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2000 N box up it, in newtons? (ideal ramp, no friction)
  39. 39.🏋️ A force of 130 N did 780 J of work. How many metres did the object move?
  40. 40.🏋️ A force of 300 N pushes a cart 9 m along the floor. How much work is done, in joules?

Answer key

  1. 2
  2. 60
  3. 2
  4. less effort
  5. 40
  6. 1
  7. 2
  8. 4
  9. 20
  10. 1000
  11. 2730
  12. 400
  13. 4100
  14. 450
  15. 150
  16. 900
  17. 120
  18. 650
  19. 3
  20. 510
  21. 750
  22. 280
  23. 550
  24. 280
  25. 270
  26. load ÷ effort
  27. 210
  28. 20
  29. 10
  30. no, work stays the same
  31. 450
  32. 50
  33. 650
  34. 10
  35. 100
  36. 4
  37. 4
  38. 500
  39. 6
  40. 2700

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