State whether the following statements are true or false

The efficiency of a single movable pulley is not 100%.

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True

False

answer is A.

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Detailed Solution

The given statement is true.
Concept- By using the notion of frictional force and its applications in the realm of mechanics and machine components, the aforementioned issue can be overcome. Friction is one of the elements impacting the performance of the single movable pulley, which is utilised for a variety of tasks.
One of the fundamental mechanical components used to transfer forces from one mechanical component to another mechanical component is the single moving pulley. The effectiveness of a single moveable is dependent on the force-transferring friction between the pulley and the string or rope linked to the pulley.
The following are the causes behind the pulley's inefficiency:
1. The pulley and the string ought to always be in contact with some friction. Lack of friction could make it difficult for forces to transfer, which would make the pulley less effective.
2. The weightlessness of the string attached to the pulley is another crucial factor in the pulley's inefficiency. To hold the pulley and allow for optimum power transmission, there needs to be some weight on the string. This weight will help to provide some friction.
Hence, the given statement is true.

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