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Engineering Worksheet: Mechanical Advantage and Work

Engineering lesson 15: Mechanical advantage and work · Set 129 · 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 400 N did 400 J of work. How many metres did the object move?
  2. 2.🏋️ A force of 110 N pushes a cart 2 m along the floor. How much work is done, in joules?
  3. 3.🏋️ A force of 460 N pushes a cart 10 m along the floor. How much work is done, in joules?
  4. 4.🏋️ A 17 kg box is lifted straight up by 4 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  5. 5.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  6. 6.🏋️ A 4 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  7. 7.🏋️ Pushing a crate 6 m took 1860 J of work. What force was used, in newtons?
  8. 8.🏋️ A smooth ramp is 6 m long and rises 2 m. What effort pushes a 1350 N box up it, in newtons? (ideal ramp, no friction)
  9. 9.🏋️ Mechanical advantage (MA) = … (a) load ÷ effort (b) load × effort (c) load + effort (d) effort ÷ load
  10. 10.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 2600 N box up it, in newtons? (ideal ramp, no friction)
  11. 11.🏋️ A force of 210 N pushes a cart 2 m along the floor. How much work is done, in joules?
  12. 12.🏋️ Pushing a crate 1 m took 350 J of work. What force was used, in newtons?
  13. 13.🏋️ A smooth ramp is 2 m long and rises 1 m. What effort pushes a 1700 N box up it, in newtons? (ideal ramp, no friction)
  14. 14.🏋️ A machine lifts a load of 660 N when you push with 110 N. What is its mechanical advantage (MA)?
  15. 15.🏋️ Work is done when a force moves something … (a) through a distance (b) very slowly (c) without moving it (d) only upwards
  16. 16.🏋️ An 18 kg box is lifted straight up by 2 m. Taking 1 kg to weigh about 10 N, how much work is done, in joules?
  17. 17.🏋️ 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)
  18. 18.🏋️ A machine lifts a load of 390 N when you push with 130 N. What is its mechanical advantage (MA)?
  19. 19.🏋️ A machine lifts a load of 900 N when you push with 180 N. What is its mechanical advantage (MA)?
  20. 20.🏋️ A force of 250 N pushes a cart 4 m along the floor. How much work is done, in joules?
  21. 21.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 1400 N box up it, in newtons? (ideal ramp, no friction)
  22. 22.🏋️ A force of 40 N pushes a cart 2 m along the floor. How much work is done, in joules?
  23. 23.🏋️ Can a simple machine reduce the work done? (a) only on Mondays (b) yes, by half (c) yes, always (d) no, work stays the same
  24. 24.🏋️ A smooth ramp is 18 m long and rises 3 m. What effort pushes a 5100 N box up it, in newtons? (ideal ramp, no friction)
  25. 25.🏋️ Pushing a crate 3 m took 990 J of work. What force was used, in newtons?
  26. 26.🏋️ A force of 20 N did 160 J of work. How many metres did the object move?
  27. 27.🏋️ A force of 390 N did 390 J of work. How many metres did the object move?
  28. 28.🏋️ A smooth ramp is 8 m long and rises 2 m. What effort pushes a 4000 N box up it, in newtons? (ideal ramp, no friction)
  29. 29.🏋️ In which unit is work measured? (a) joule (J) (b) metre (m) (c) newton (N) (d) watt hour
  30. 30.🏋️ Pushing a crate 3 m took 1470 J of work. What force was used, in newtons?
  31. 31.🏋️ A machine lifts a load of 220 N when you push with 110 N. What is its mechanical advantage (MA)?
  32. 32.🏋️ A smooth ramp is 5 m long and rises 1 m. What effort pushes a 1500 N box up it, in newtons? (ideal ramp, no friction)
  33. 33.🏋️ A smooth ramp is 4 m long and rises 1 m. What effort pushes a 3400 N box up it, in newtons? (ideal ramp, no friction)
  34. 34.🏋️ A force of 280 N pushes a cart 6 m along the floor. How much work is done, in joules?
  35. 35.🏋️ A machine lifts a load of 40 N when you push with 20 N. What is its mechanical advantage (MA)?
  36. 36.🏋️ A force of 180 N did 720 J of work. How many metres did the object move?
  37. 37.🏋️ A force of 380 N did 760 J of work. How many metres did the object move?
  38. 38.🏋️ A machine lifts a load of 1200 N when you push with 200 N. What is its mechanical advantage (MA)?
  39. 39.🏋️ A force of 340 N pushes a cart 7 m along the floor. How much work is done, in joules?
  40. 40.🏋️ 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?

Answer key

  1. 1
  2. 220
  3. 4600
  4. 680
  5. 250
  6. 80
  7. 310
  8. 450
  9. load ÷ effort
  10. 650
  11. 420
  12. 350
  13. 850
  14. 6
  15. through a distance
  16. 360
  17. 300
  18. 3
  19. 5
  20. 1000
  21. 350
  22. 80
  23. no, work stays the same
  24. 850
  25. 330
  26. 8
  27. 1
  28. 1000
  29. joule (J)
  30. 490
  31. 2
  32. 300
  33. 850
  34. 1680
  35. 2
  36. 4
  37. 2
  38. 6
  39. 2380
  40. 180

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