A block placed on a rough horizontal surface is pulled by a horizontal force F Let f be the force applied by the rough surface on the block . Plot a graph of f versus F .

Explanation

To solve the problem of plotting a graph of the frictional force \( f \) versus the applied force \( F \) on a block placed on a rough horizontal surface, we can follow these steps:

### Step 1: Understand the Forces Involved
- The block is subjected to a horizontal pulling force \( F \) and a frictional force \( f \) acting in the opposite direction.
- The frictional force \( f \) can be static or kinetic depending on whether the block is at rest or in motion.

### Step 2: Analyze the Static Friction
- When the applied force \( F \) is zero, the frictional force \( f \) is also zero.
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