An oscillating object in simple harmonic motion completes $4\mathrm{.}58$ cycles in one minute. Initially, the object is $1\mathrm{.}45$ m below the midpoint and is moving downwards at a speed of $13\mathrm{.}7\frac{m}{m}in.$ Suppose that the displacement $y$ of the object is represented by

$y=$Asin$(t+)$

Answer the following. Round your answers to at least $5$ significant figures and include the units.

a$)$ Find $A,$ and $.$

$A=$ give a positive value$)$

$=($give a positive value$)$

$=($give a positive value$)$

b$)$ If initially the object is moving upwards instead $($everything else is the same as before$),$ find $A,$ and $.$

$A=($give a positive value$)$

$=($give a positive value$)$

$$