Define force constant of a sring. Give its SI unit and dimensional formula.

Explanation

**Step-by-Step Solution:**

1. **Definition of Force Constant:**
The force constant of a spring, also known as the spring constant (denoted as \( k \)), is defined as the force required to produce a unit extension or compression in the spring. Mathematically, it can be expressed as:
\[ k = \frac{F}{x} \]
where \( F \) is the force applied to the spring and \( x \) is the extension or compression of the spring from its original position.
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