5.5.145 - SHM period equations

Use T = 2π√(m/k) for a mass–spring oscillator and T = 2π√(l/g) for a simple pendulum.

Use - shm period equations to connect the rule to the data and decision in the question.

This matters because - shm period equations determines what can be inferred or chosen; begin with the stated conditions and keep the conclusion tied to the evidence.

Example: apply - shm period equations to one small, clearly defined case, show the key step or comparison, and explain the result in words.

Boundary: use the formula and units given in the question, show the substitution and interpret the result; the calculation alone is not the conclusion.