A 180-lb farmer tries to restrain the cow from escaping by wrapping the rope two turns aro...

A 180-lb farmer tries to restrain the cow from escaping by wrapping the rope two turns around the tree trunk as shown. Tf the cow exerts a force of 250 lb on the rope, determine if the fanner can successfully restrain the cow. The coefficient of static friction between the rope and the tree trunk is µs = 0.15, and between the farmer’s shoes and the ground µ’s = 0.3.