A loaded penguin sled weighing 100 N rests on a plane inclined at angle 30 to th

Question

A loaded penguin sled weighing 100 N rests on a plane inclined at angle 30 to the
horizontal (see the figure). Between the sled and the plane, the coefficient of static
friction is 0.2, and the coefficient of kinetic friction is 0.1.

a) What is the least magnitude of the force
F , parallel to the plane, which will prevent the
sled from slipping down the plane?

b) What is the minimum magnitude of the
force F that will start the sled moving up the
plane?

c) What value of F is required to move the
sled up the plane at constant velocity?

A loaded penguin sled weighing 100 N rests on a plane inclined at angle 30 to the horizontal (see the figure). Between the sled and the plane, the coefficient of static friction is 0.2, and the coefficient of kinetic friction is 0.1. a) What is the least magnitude of the force F , parallel to the plane, which will prevent the sled from slipping down the plane? b) What is the minimum magnitude of the force F that will start the sled moving up the plane? c) What value of F is required to move the sled up the plane at constant velocity?

Explanation / Answer

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A loaded penguin sled weighing 70 N rests on a plane inclined at 20

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