Physics

Problem

Three blocks A (

2\,\text{kg}

), B (

3\,\text{kg}

) and C (

5\,\text{kg}

) are placed in contact in this order from left to right on a horizontal surface. The coefficient of kinetic friction between each block and the surface is

0.20

. A horizontal force of

60\,\text{N}

is applied on block C toward the left. Take

g = 10\,\text{m\,s}^{-2}

. What is the magnitude of the contact force between blocks A and B? a)

14\,\text{N}

8\,\text{N}

12\,\text{N}

20\,\text{N}

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