A block of mass 0.1 kg attached to a spring of spring constant 400 N/m is putted rightward from `x_(0)=0` to `x_(1)=15` mm. Find the work done by spring force.

Explanation

To find the work done by the spring force when a block is displaced from \( x_0 = 0 \) to \( x_1 = 15 \) mm, we can follow these steps:

### Step 1: Understand the formula for work done by a spring
The work done by a spring when it is compressed or stretched is given by the formula:
\[ W = -\frac{1}{2} k x^2 \]
where:
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