A Block of Mass 4

question 59

Multiple Choice

A block of mass 4.0 kg rests on a horizontal surface where the coefficient of kinetic friction between the two is 0.20.A string attached to the block is pulled horizontally,resulting in a 3.0-m/s² acceleration by the block.Find the tension in the string.(g = 9.80 m/s²)

• A)12 N
• B)7.8 N
• C)20 N
• D)4.2 N

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