Question

A horizontal force of 12 N pushes a 0.50-kg book against a vertical wall. The book is initially at rest. If the coefficients of friction are s= 0.60 and k= 0.50 which of the following is true?
A) The frictional force is 4.9 N
B) The frictional force is 7.2 N
C) The normal force is 4.9 N
D) The block will start moving and accelerate
E) If started moving downward, the block will accelerate

Answer

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