An object with a mass of #4 kg# is lying still on a surface and is compressing a horizontal spring by #7/8 m#. If the spring's constant is #16 (kg)/s^2#, what is the minimum value of the surface's coefficient of static friction?
Apr 28, 2016
The spring applies a force of
Now the force of friction on the object =
so, if it is not moving, net force on the body must be zero,