Pulleys and Wheel and Axle Worksheet

Engineering lesson 14: Pulleys and the wheel and axle · Set 489 · 40 questions

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.

1. 1.🪝 More rope sections holding a load means … (a) more effort needed (b) the load floats (c) less effort needed (d) no change
2. 2.🪝 A load of 360 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
3. 3.🪝 A pulley system lifts a 220 N load with an effort of 110 N. What is its mechanical advantage (MA)?
4. 4.🪝 A bucket weighing 300 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
5. 5.🪝 Fixed or movable pulley: which one halves the effort? (a) a fixed pulley (b) a movable pulley
6. 6.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
7. 7.True or false: a movable pulley only changes direction. (a) False (b) True
8. 8.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 1 m, how many metres of rope must you pull?
9. 9.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the direction of pull (d) the colour of rope
10. 10.🪝 A wheel and axle is a big wheel fixed to … (a) a loose rope (b) a flat ramp (c) a smaller rod (axle) (d) a sharp wedge
11. 11.🪝 Fixed or movable pulley: which one rises with the load? (a) a movable pulley (b) a fixed pulley
12. 12.True or false: a movable pulley stays in one place. (a) False (b) True
13. 13.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
14. 14.🪝 A winch has a wheel of radius 7 cm and an axle of radius 1 cm. What effort on the wheel lifts a 490 N bucket on the axle, in newtons? (ideal)
15. 15.🪝 A pulley system lifts a 360 N load with an effort of 90 N. What is its mechanical advantage (MA)?
16. 16.🪝 A winch has a wheel of radius 6 cm and an axle of radius 3 cm. What effort on the wheel lifts a 60 N bucket on the axle, in newtons? (ideal)
17. 17.🪝 A pulley system lifts a 750 N load with an effort of 250 N. What is its mechanical advantage (MA)?
18. 18.True or false: a movable pulley is on a flagpole top. (a) True (b) False
19. 19.True or false: a fixed pulley makes you pull 2× rope. (a) True (b) False
20. 20.🪝 A winch has a wheel of radius 5 cm and an axle of radius 1 cm. What effort on the wheel lifts a 400 N bucket on the axle, in newtons? (ideal)
21. 21.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
22. 22.🪝 A load of 720 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
23. 23.🪝 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)
24. 24.🪝 A winch has a wheel of radius 14 cm and an axle of radius 2 cm. What effort on the wheel lifts a 210 N bucket on the axle, in newtons? (ideal)
25. 25.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 5 m, how many metres of rope must you pull?
26. 26.🪝 A bucket weighing 60 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
27. 27.🪝 A well winch has a handle (wheel) of radius 12 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
28. 28.🪝 Fixed or movable pulley: which one only changes direction? (a) a movable pulley (b) a fixed pulley
29. 29.🪝 A pulley system lifts a 200 N load with an effort of 100 N. What is its mechanical advantage (MA)?
30. 30.🪝 A winch has a wheel of radius 6 cm and an axle of radius 2 cm. What effort on the wheel lifts a 600 N bucket on the axle, in newtons? (ideal)
31. 31.🪝 A bucket weighing 100 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
32. 32.🪝 A winch has a wheel of radius 5 cm and an axle of radius 1 cm. What effort on the wheel lifts an 850 N bucket on the axle, in newtons? (ideal)
33. 33.🪝 A winch has a wheel of radius 20 cm and an axle of radius 5 cm. What effort on the wheel lifts a 440 N bucket on the axle, in newtons? (ideal)
34. 34.🪝 A winch has a wheel of radius 9 cm and an axle of radius 3 cm. What effort on the wheel lifts a 90 N bucket on the axle, in newtons? (ideal)
35. 35.🪝 A well winch has a handle (wheel) of radius 4 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
36. 36.🪝 A well winch has a handle (wheel) of radius 8 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
37. 37.🪝 A well winch has a handle (wheel) of radius 8 cm turning an axle of radius 1 cm. What is its mechanical advantage (MA)?
38. 38.🪝 A well winch has a handle (wheel) of radius 40 cm turning an axle of radius 5 cm. What is its mechanical advantage (MA)?
39. 39.🪝 A well winch has a handle (wheel) of radius 24 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
40. 40.True or false: a fixed pulley rises with the load. (a) False (b) True

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