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प्रश्न
Draw a labelled diagram of an arrangement of two pulleys, one fixed and other movable. In the diagram, mark the directions of all forces acting on it. What is the ideal mechanical advantage of the system? How can it be achieved?
उत्तर
The ideal mechanical advantage of this system is 2. This can be achieved by assuming that the string and the pulley are massless and that there is no friction in the pulley bearings, at the axle, or between the string and the surface of the pulley rim.
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संबंधित प्रश्न
What is the velocity ratio of a single movable pulley? How does the friction in the pulley bearing affect it?
In a single movable pulley, if the effort moves by a distance x upwards, by what height is the load raised?
Give reason for the following:
The efficiency of a movable pulley is always less than 100%.
A movable pulley is used as ______.
What is the mechanical advantage of a single movable pulley in the ideal case?
Name a machine which is used to multiply force.
Name a single pulley in which displacement of load and effort is not the same.
| Meera chose to use a block and tackle system of '9' pulleys instead of a single movable pulley to lift a heavy load. |
What is the advantage of using a block and tackle system over a single movable pulley?
