simple harmonic motion

i think u forgot to give the value of 'K'

but we can still find μ_s without having value of K !!!!!

mine is comming μ_s=8(pi)²/225

is it correct ???????????????/

dimensions u r correct and sorry for not giving the value of k.it is 600N/m.please post ur soln or give me an outline

T=2pi√(m+6)/k

& when after stretching through 50 mm, just make acceleration of both blocks equal,

u will get the ans >............``````````~~~~~~`

<<<<<<<<<<dimensions>>>>>>>>>>.]