Pulleys and Wheel and Axle Worksheet

Engineering lesson 14: Pulleys and the wheel and axle · Set 763 · 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.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a loose rope (c) a smaller rod (axle) (d) a flat ramp
2. 2.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 4 m, how many metres of rope must you pull?
3. 3.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 8 m, how many metres of rope must you pull?
4. 4.🪝 A pulley system has 3 rope sections holding up the load. To lift the load by 3 m, how many metres of rope must you pull?
5. 5.🪝 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?
6. 6.🪝 A bucket weighing 290 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 halves the effort? (a) a movable pulley (b) a fixed pulley
8. 8.🪝 A winch has a wheel of radius 3 cm and an axle of radius 1 cm. What effort on the wheel lifts a 510 N bucket on the axle, in newtons? (ideal)
9. 9.🪝 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?
10. 10.🪝 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)
11. 11.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a movable pulley (b) a fixed pulley
12. 12.🪝 A pulley system lifts a 570 N load with an effort of 190 N. What is its mechanical advantage (MA)?
13. 13.True or false: a movable pulley is on a flagpole top. (a) False (b) True
14. 14.🪝 A bucket weighing 230 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
15. 15.True or false: a fixed pulley hangs on the rope loop. (a) False (b) True
16. 16.🪝 What does a single fixed pulley change? (a) gravity (b) the size of the load (c) the colour of rope (d) the direction of pull
17. 17.True or false: a fixed pulley only changes direction. (a) False (b) True
18. 18.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 10 m, how many metres of rope must you pull?
19. 19.True or false: a movable pulley needs effort = load. (a) True (b) False
20. 20.🪝 A well winch has a handle (wheel) of radius 6 cm turning an axle of radius 3 cm. What is its mechanical advantage (MA)?
21. 21.🪝 A pulley system has 2 rope sections holding up the load. To lift the load by 3 m, how many metres of rope must you pull?
22. 22.🪝 A winch has a wheel of radius 15 cm and an axle of radius 3 cm. What effort on the wheel lifts a 250 N bucket on the axle, in newtons? (ideal)
23. 23.🪝 A winch has a wheel of radius 9 cm and an axle of radius 3 cm. What effort on the wheel lifts a 300 N bucket on the axle, in newtons? (ideal)
24. 24.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 9 m, how many metres of rope must you pull?
25. 25.🪝 A winch has a wheel of radius 32 cm and an axle of radius 4 cm. What effort on the wheel lifts an 880 N bucket on the axle, in newtons? (ideal)
26. 26.🪝 A bucket weighing 220 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.True or false: a movable pulley stays in one place. (a) True (b) False
28. 28.🪝 A winch has a wheel of radius 10 cm and an axle of radius 5 cm. What effort on the wheel lifts an 80 N bucket on the axle, in newtons? (ideal)
29. 29.🪝 Fixed or movable pulley: which one only changes direction? (a) a fixed pulley (b) a movable pulley
30. 30.🪝 A load of 40 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
31. 31.True or false: a fixed pulley makes you pull 2× rope. (a) False (b) True
32. 32.🪝 Fixed or movable pulley: which one stays in one place? (a) a fixed pulley (b) a movable pulley
33. 33.True or false: a fixed pulley rises with the load. (a) True (b) False
34. 34.🪝 A winch has a wheel of radius 8 cm and an axle of radius 4 cm. What effort on the wheel lifts a 200 N bucket on the axle, in newtons? (ideal)
35. 35.🪝 A pulley system lifts a 500 N load with an effort of 250 N. What is its mechanical advantage (MA)?
36. 36.🪝 A winch has a wheel of radius 8 cm and an axle of radius 2 cm. What effort on the wheel lifts a 560 N bucket on the axle, in newtons? (ideal)
37. 37.🪝 Fixed or movable pulley: which one needs effort = load? (a) a fixed pulley (b) a movable pulley
38. 38.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a fixed pulley (b) a movable pulley
39. 39.True or false: a fixed pulley halves the effort. (a) True (b) False
40. 40.🪝 A winch has a wheel of radius 16 cm and an axle of radius 2 cm. What effort on the wheel lifts an 800 N bucket on the axle, in newtons? (ideal)

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