# An object with a mass of #8 kg# is lying still on a surface and is compressing a horizontal spring by #5/6 m#. If the spring's constant is #12 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?

##### 1 Answer

Apr 9, 2016

Force **F** required to compress a spring by **x** unit is

Here

hence Force exerted on the object of mass 1 kg is

This force is balanced by the then static frictional force as it is self adjusting one,

So the minimum value of the coefficient of static frictions

So