Answer:
The maximum displacement from the equilibrium position is 9
Explanation:
We are given
equation for the simple harmonic motion equation
![y=9cos((\pi)/(2)t)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/ayrmdm37z4hfc489t8ab31ecby0jevou0k.png)
we can use trig formula
![y=Acos(Bt)](https://img.qammunity.org/2020/formulas/mathematics/middle-school/2selumem0ehu04qwrug6ivsipwf5wwiqjh.png)
The maximum value of this equation is always A
So, firstly, we will compare and find A
A=9
so,
The maximum displacement from the equilibrium position is 9