A person drags a sulking dog (who is pretending to be dead) on a polished wood floor along a straight line at a rate of 0.50 m/s. The angle the taut leash makes with the horizontal is 30 degrees. The dog weighs 20 kg and the coefficient of dynamic friction =0.2. Determine the tensile force exerted on the dog by the leash. What force does the dog exert on her 'inconsiderate' owner? Note that the frictional force acting on the dog is equal to the contact force normal to the floor times the coefficient of dynamic friction.
