A string of length 40 cm and weighing 10 g is attached to a spring at one end and to a fixed wall at the other end. The spring has a spring constant of `160 N m^-1` and is stretched by 1-0 cm. If a wave pulse is produced on the string near the wall, how much time will it take to reach the spring ?

Explanation

To solve the problem, we need to determine how long it takes for a wave pulse to travel along a string from the wall to the spring. We will follow these steps:

### Step 1: Convert the given measurements to standard units
- Length of the string (L) = 40 cm = 0.4 m
- Mass of the string (m) = 10 g = 0.01 kg
- Spring constant (k) = 160 N/m
- Stretch of the spring (x) = 1 cm = 0.01 m

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