← Pulleys and the wheel and axle lesson New set →

Pulleys and Wheel and Axle Worksheet

Engineering lesson 14: Pulleys and the wheel and axle · Set 179 · 40 questions
TalentJR

Engineer's tip (Count the ropes): Fixed pulley: changes direction, effort = load. Pulley system: effort = load ÷ supporting rope sections; rope pulled = lift height × that number. Wheel and axle: MA = wheel radius ÷ axle radius; effort = load ÷ MA.

NameDateTime takenScore ___ / 40
  1. 1.🪝 What does a single fixed pulley change? (a) the direction of pull (b) gravity (c) the colour of rope (d) the size of the load
  2. 2.🪝 A load of 440 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
  3. 3.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
  4. 4.🪝 Fixed or movable pulley: which one halves the effort? (a) a fixed pulley (b) a movable pulley
  5. 5.🪝 More rope sections holding a load means … (a) less effort needed (b) more effort needed (c) the load floats (d) no change
  6. 6.🪝 A bucket weighing 280 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  7. 7.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
  8. 8.🪝 A bucket weighing 380 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  9. 9.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 2 m, how many metres of rope must you pull?
  10. 10.🪝 A well winch has a handle (wheel) of radius 15 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?
  11. 11.🪝 A load of 1000 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
  12. 12.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
  13. 13.True or false: a movable pulley makes you pull 2× rope. (a) True (b) False
  14. 14.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
  15. 15.🪝 A bucket weighing 190 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  16. 16.True or false: a movable pulley rises with the load. (a) True (b) False
  17. 17.🪝 A wheel and axle is a big wheel fixed to … (a) a flat ramp (b) a sharp wedge (c) a loose rope (d) a smaller rod (axle)
  18. 18.True or false: a fixed pulley hangs on the rope loop. (a) True (b) False
  19. 19.🪝 A bucket weighing 490 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  20. 20.True or false: a movable pulley hangs on the rope loop. (a) True (b) False
  21. 21.🪝 A winch has a wheel of radius 3 cm and an axle of radius 1 cm. What effort on the wheel lifts a 600 N bucket on the axle, in newtons? (ideal)
  22. 22.True or false: a movable pulley stays in one place. (a) False (b) True
  23. 23.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 7 m, how many metres of rope must you pull?
  24. 24.🪝 A load of 80 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
  25. 25.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
  26. 26.🪝 Fixed or movable pulley: which one only changes direction? (a) a movable pulley (b) a fixed pulley
  27. 27.🪝 A bucket weighing 170 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  28. 28.True or false: a fixed pulley stays in one place. (a) True (b) False
  29. 29.🪝 A pulley system lifts a 630 N load with an effort of 210 N. What is its mechanical advantage (MA)?
  30. 30.True or false: a fixed pulley only changes direction. (a) True (b) False
  31. 31.True or false: a fixed pulley needs effort = load. (a) True (b) False
  32. 32.🪝 A well winch has a handle (wheel) of radius 16 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
  33. 33.🪝 A pulley system lifts a 600 N load with an effort of 300 N. What is its mechanical advantage (MA)?
  34. 34.True or false: a movable pulley is on a flagpole top. (a) False (b) True
  35. 35.🪝 A winch has a wheel of radius 12 cm and an axle of radius 2 cm. What effort on the wheel lifts a 480 N bucket on the axle, in newtons? (ideal)
  36. 36.🪝 A bucket weighing 110 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  37. 37.🪝 A bucket weighing 440 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  38. 38.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
  39. 39.🪝 A bucket weighing 140 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
  40. 40.True or false: a movable pulley halves the effort. (a) False (b) True

Answer key

  1. the direction of pull
  2. 110
  3. 4
  4. a movable pulley
  5. less effort needed
  6. 280
  7. a fixed pulley
  8. 380
  9. 8
  10. 5
  11. 250
  12. a fixed pulley
  13. True
  14. a movable pulley
  15. 190
  16. True
  17. a smaller rod (axle)
  18. False
  19. 490
  20. True
  21. 200
  22. False
  23. 14
  24. 40
  25. a fixed pulley
  26. a fixed pulley
  27. 170
  28. True
  29. 3
  30. True
  31. True
  32. 8
  33. 2
  34. False
  35. 80
  36. 110
  37. 440
  38. a movable pulley
  39. 140
  40. True

Free engineering lessons, practice and worksheets at talentjr.in/engineering-for-kids