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

Another SHM question. Thanks for the help on my first one.

The block is at x_{0}= +5 cm with a positive velocity V_{0}at time t = 0. Its motion is SHM with amplitude 10 cm and period 2 seconds. If x(t) = Acos(wt + [tex]\varphi[/tex]), the phase constant [tex]\varphi[/tex] should be:

2. Relevant equations

x(t) = Acos(wt + [tex]\varphi[/tex])

3. The attempt at a solution

0.05 = 0.10cos([tex]\pi[/tex] + [tex]\varphi[/tex])

[tex]\varphi[/tex] = 60 - [tex]\pi[/tex] (since the 60 is in degrees...do I just use pi radians = 3.14 radians?)

= 57 degrees

I got the pi for wt this way btw:

wT = 2pi

w = 2pi/T = pi (since T = 2)

Not sure if I screwed up that or the radians/degrees thing at the end. Any help would be appreciated.

**Physics Forums | Science Articles, Homework Help, Discussion**

Dismiss Notice

Join Physics Forums Today!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

# Homework Help: Solving for Phase Constant: Simple Harmonic Motion

**Physics Forums | Science Articles, Homework Help, Discussion**