an objects motion is describe by the equation d=3sin(8pi t)-2. the displacement d is measured in meter. the time t is measured in seconds.

a. what is the object position (in meter)at t=0?
b. what is the object maximum displacement(in meter) from its t=0 position?
c. how much time(in sec) is required for one oscillation
d. what is the frequency(measured in Hz) of this oscillation

Question

an objects motion is describe by the equation d=3sin(8pi t)-2. the displacement d is measured in meter. the time t is measured in seconds. 

a. what is the object position (in meter)at t=0?
b. what is the object maximum displacement(in meter) from its t=0 position?
c. how much time(in sec) is required for one oscillation
d. what is the frequency(measured in Hz) of this oscillation

anonymous · Answer

I found answrs for a.b. and c but need help with d

anonymous · Answer

If you have A,B, and C then you have the answer for D. Frequency is the angular momentum over 2pi (the length of the wave) or velocity over the wavelegth. And you can find velocity because you have the period (C) and you have the wavelength. $$V=\lambda/\Gamma $$
which is also $$V=\lambda f$$

anonymous · Answer

what numbers would I plug into which?

anonymous · Answer

The v is the velocity, the lambda is the wavelength, the f is frequency and the T is the period. 
You have both the period and vavelength. So v is wavelength/period. . Once you have the velocity divide again by frequency.

which is basically just 1/period.