"Rosin is rubbed on the violin bow ". Why ?

Explanation

**Step-by-Step Solution:**

1. **Understanding the Context**: The question asks why rosin is applied to a violin bow. The bow is used to produce sound on the violin by drawing it across the strings.

2. **Role of Friction**: For the bow to effectively produce sound, it must create sufficient friction against the violin strings. If there is not enough friction, the bow will slip over the strings without producing sound.

3. **Properties of Rosin**: Rosin is a solid form of resin obtained from pine trees and other plants. It has adhesive properties that increase friction when applied to surfaces.

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