A Block with a Mass of 10 Kg Is at Rest

question 62

Multiple Choice

A block with a mass of 10 kg is at rest on a horizontal surface.The coefficient of static friction between the block and the surface is 0.30,and the coefficient of kinetic friction is 0.25.A force of 20 N acts on the block toward the left.The magnitude of the frictional force on the block is

• A)10 N
• B)20 N
• C)0.10 kN
• D)30 N
• E)3.0 N

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