A

$4$

$.$

$9$

$0$

$-$

kg object oscillates on a horizontal spring with an amplitude of

$3$

$.$

$9$

$0$

$$cm

$.$

$$Its maximum acceleration is

$2$

$6$

$.$

$0$

$($

m

$)$

$/$

$($

s

$^$

$($

$2$

$)$

$)$

$.$

Find the force constant k of the spring.

k

$=$

$,$

L

$\_$

$($

Correct Answer

$)$

$($

N

$)$

$/$

$($

m

$)$

Find the frequency f of the object.

f

$=$

obrace

$($

$$Incorrect Answer

$)$

Hz

Find the period T of the motion of the object.