SITUANARIO: A sled with mass ms=20 kg is pulled horizontally across snow. The coefficient of kinetic friction between sled
and snow is uk1= 0.27. A penguin with mass mp=25 kg rides on the sled, as in the figure above. The coefficient of static
friction between penguin and sled is us2 = 0.68.
Determine the maximum horizontal force Fapp that can be exerted on the sled before the penguin begins to slide off the
sled. HINT: Draw separate FBD diagrams for the penguin and the sled.