A Horizontal Force of 12 N Pushes a 0

question 64

Multiple Choice

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 = 0.60 and = 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

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