Pulleys and Wheel and Axle Worksheet

Engineering lesson 14: Pulleys and the wheel and axle · Set 53 · 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.True or false: a fixed pulley halves the effort. (a) True (b) False
2. 2.True or false: a fixed pulley hangs on the rope loop. (a) False (b) True
3. 3.🪝 Fixed or movable pulley: which one needs effort = load? (a) a movable pulley (b) a fixed pulley
4. 4.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 8 m, how many metres of rope must you pull?
5. 5.🪝 Fixed or movable pulley: which one only changes direction? (a) a fixed pulley (b) a movable pulley
6. 6.🪝 A load of 690 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
7. 7.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 3 m, how many metres of rope must you pull?
8. 8.🪝 A load of 60 N hangs from a pulley system in which 3 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
9. 9.🪝 A wheel and axle is a big wheel fixed to … (a) a sharp wedge (b) a flat ramp (c) a smaller rod (axle) (d) a loose rope
10. 10.🪝 A load of 340 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
11. 11.True or false: a movable pulley makes you pull 2× rope. (a) True (b) False
12. 12.🪝 A well winch has a handle (wheel) of radius 12 cm turning an axle of radius 4 cm. What is its mechanical advantage (MA)?
13. 13.🪝 A well winch has a handle (wheel) of radius 12 cm turning an axle of radius 2 cm. What is its mechanical advantage (MA)?
14. 14.🪝 A winch has a wheel of radius 6 cm and an axle of radius 1 cm. What effort on the wheel lifts a 240 N bucket on the axle, in newtons? (ideal)
15. 15.🪝 A pulley system has 1 rope section holding up the load. To lift the load by 6 m, how many metres of rope must you pull?
16. 16.🪝 A load of 520 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
17. 17.🪝 A bucket weighing 310 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
18. 18.🪝 A load of 240 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
19. 19.🪝 A load of 160 N hangs from a pulley system in which 2 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
20. 20.🪝 Fixed or movable pulley: which one halves the effort? (a) a movable pulley (b) a fixed pulley
21. 21.🪝 A bucket weighing 150 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
22. 22.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 3 m, how many metres of rope must you pull?
23. 23.🪝 Fixed or movable pulley: which one makes you pull 2× rope? (a) a fixed pulley (b) a movable pulley
24. 24.🪝 A winch has a wheel of radius 15 cm and an axle of radius 5 cm. What effort on the wheel lifts a 450 N bucket on the axle, in newtons? (ideal)
25. 25.🪝 Fixed or movable pulley: which one stays in one place? (a) a movable pulley (b) a fixed pulley
26. 26.🪝 What does a single fixed pulley change? (a) the size of the load (b) the direction of pull (c) the colour of rope (d) gravity
27. 27.🪝 A pulley system lifts a 240 N load with an effort of 60 N. What is its mechanical advantage (MA)?
28. 28.🪝 Fixed or movable pulley: which one hangs on the rope loop? (a) a movable pulley (b) a fixed pulley
29. 29.True or false: a movable pulley halves the effort. (a) True (b) False
30. 30.🪝 A load of 220 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.🪝 Fixed or movable pulley: which one is on a flagpole top? (a) a movable pulley (b) a fixed pulley
32. 32.🪝 A winch has a wheel of radius 4 cm and an axle of radius 2 cm. What effort on the wheel lifts an 80 N bucket on the axle, in newtons? (ideal)
33. 33.🪝 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?
34. 34.True or false: a fixed pulley stays in one place. (a) True (b) False
35. 35.🪝 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)
36. 36.🪝 A load of 1080 N hangs from a pulley system in which 4 rope sections hold up the load. What effort is needed, in newtons? (ideal pulleys)
37. 37.🪝 A pulley system lifts an 80 N load with an effort of 20 N. What is its mechanical advantage (MA)?
38. 38.🪝 A bucket weighing 130 N is lifted with a single fixed pulley at the top of a well. What effort is needed, in newtons? (ideal pulley, no friction)
39. 39.🪝 A winch has a wheel of radius 3 cm and an axle of radius 1 cm. What effort on the wheel lifts a 210 N bucket on the axle, in newtons? (ideal)
40. 40.🪝 A pulley system has 4 rope sections holding up the load. To lift the load by 7 m, how many metres of rope must you pull?

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