A sled weighing 100 N is pulled horizontally across snow so that the coefficient of kinetic friction between sled and snow is .275. A penguin weighing 50 N rides on the sled to start with the penguin digs in his claws so he is firmly attached to the sled. What value of F do you need for the sled and penguin to move at constant speed?? after a while, our penguin gets tires od holding on with his claws. Now the coeffient of static friction between penguin and sled is .750 find the maximun horizontal force F that can be exerted on the sled before the penguin bgins to slide off?