A person pushes on a 60-kg refrigerator with a horizontal force of -279 N; the m

Question

A person pushes on a 60-kg refrigerator with a horizontal force of -279 N; the minus sign indicates that the force points in the ?x direction. The coefficient of static friction is 0.6.

(a) If the refrigerator does not move, what are the magnitude and direction of the static frictional force that the floor exerts on the refrigerator?
Static frictional force =

(b) What is the magnitude of the largest pushing force that can be applied to the refrigerator before it just begins to move? Assume g = 9.81 m/s2.
Magnitude of largest force =

Explanation / Answer

a)Floor exerts 279 N. because fridge does not move so the friction is equal and opposite to the F
b)F largest =*mg=.6*60*9.8=352.8 [this is the limiting value for static friction . beyond it frdge will start to move]

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