posted by johnny .
The mass of the block is 1.8 107 kg, the dip angle è of the bedding plane is 26°, and the coeffient of static friction between block and plane is 0.63.
(a) Show that the block will not slide.
(b) Water seeps into the joint and expands upon freezing, exerting on the block a force F parallel to AA'. What minimum value of F will trigger a slide?