(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A mass is hanging on a vertical spring, and oscillates in SHM with an amplitude of 10.0 cm, and period 0.500 s. The graph shows its motion as a function of time. At t = 0, the mass is found at x = -7.50 cm below the equilibrium position.

Assuming that x(t) = A cos (ωt + φ), find the value of the initial phase angle, φ.

2. Relevant equations

3. The attempt at a solution

How do I get started in finding the initial phase angle, φ?

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# Homework Help: How do you find the initial phase angle?

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