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

A body oscillates with simple harmonic motion along the x-axis. Its displacement varies with time according to the equation

A=Ai * sin(wt+ (pi/3)) ,

Where w = pi radians per second, t is in seconds, and Ai = 2.4m.

What is the phase of motion at t = 9.4 seconds? Answer in units of radians.

2. Relevant equations

A is the amplitude.

Ai is the initial amplitude.

w is actually "omega" but I didn't know how to enter that. That is the given angular velocity in rad/s.

Pi is 3.14.....

3. The attempt at a solution

I honesty don't know where to start. I just plugged into the equation with the given data and got

-1.78355 meters.

The answer wants radians. Also, it asks for the "phase of motion". The answer I got is just the final amplitude at the given time.

Any help would be appreciated.

Thanks.

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# Homework Help: Simple harmonic motion of a body question

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