Question

referee to the attachment given above ​

Answer 1

answer is in the attachment if any doubt contact me

Answer 2

Given

the body is in simple harmonic motion

a = -bx

x = -a/b

x/a = 1/b

Now we know that

time period = 2πf

time period = 2π sqrt (displacement /acceleration)

time period = 2π sqrt (1/b)