a loaded penguin sled weighing 80n

By Allen Kazadi

A loaded penguin sled weighing 80 N rests on a plane inclined at 휃=20°to the horizontal. Between the sled and the plane, the coefficient of static friction is 0.25 and the coefficient of kinetic friction is 0.15.
a.What is the least magnitude of force F, parallel to the plane, that will prevent the sled from slipping down theplane?
b.What value of F is required to move the sled up the plane at a constant velocity?


A) F = 8.57N

B) F = 38.64N

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