# Help with Oscillations Problem

1. Mar 27, 2009

### nweis84

1. The problem statement, all variables and given/known data

A 253 g oscillator has a speed of 89.28 cm/s when the displacement is 2.79 cm and a speed of 70.95 cm/s when the displacement is 6.56 cm. What is the oscillator's maximum speed?

2. Relevant equations

3. The attempt at a solution

well, I haven't really attempted a solution because I'm totally confused on where to start with this problem. I've read the entire chapter and can't come up with any similar examples or formulas that would help solve this because it just doesn't give me enough information.

2. Mar 27, 2009

### Dr.D

Re: oscillations

Presumably this is a mechanical oscillator executing simple harmonic motion?

If that is the case, assume the displacement looks like
x(t) = A*cos(omega*t) + B*sin(omega*t)
and see what you can do to fit the given information.

3. Mar 27, 2009

### nweis84

Re: oscillations

Sorry I'm still very confused,
how can we find omega or t or A or B from any of the given information?

my book just doesn't explain at all how to handle this type of problem

and also thats the first time I've seen an equation written that way

I have seen the x(t) = Acos(w*t) and the one with the phase constant phi