How do i find stretch? the problem in questioning has already given me the elastic energy and k-value, but i have no idea how to find stretch by itself

Stretch can be obtained using the Elastic potential energy formula.

The expression to find the stretch (x) is

Explanation:

Given:

Elastic potential energy (EPE) of the spring mass system and the spring constant (k) are given.

To find: Elongation in the spring (x).

We can find the elongation or stretch of the spring using the formula for Elastic Potential Energy (EPE).

The formula to find EPE is given as:

Rewriting the above expression in terms of 'x', we get:

Example:

If EPE = 100 J and spring constant, k = 2 N/m.

Elongation or stretch is given as:

Therefore, the stretch in the spring is 10 m.

So, stretch in the spring can be calculated using the formula for Elastic Potential Energy.

d.7.5cm is your answer

the answer is b, have negligible mass