time period

Is the answer (60/360)*2pi√m/k

the spring is attached to the left wall ??

Yup..
made a mistake..
:P

i gave time which it will take in reaching from extreme to wall again and its time period is its twice..

Its just a two line one...

here it is just a part of entire SHM...

priyam wats natural length for a spring. can a spring can be compressed below its natural length

please explain me how it is equivalent to 120

Natural length is length in relaxed postion..

and ideal spring can be compressed or stretched be it normal length or any other length...

Write the displacement x=asin(wt)

when x=a/2

wt=30degree frm 0 to a/2

frm x=0 to exterme it is 90 degree ......... is it clear..

so frm a/2 to a its (90-30) 60 degree...

and it return so other 60 degree so 120 degree...

is it clear :)