# Friction between plane and object

In the above diagram, a box with mass $$m_{1} (= 8 \text{ kg}$$) is on a slope with $$60^{\circ}$$ inclination. This box is connected with another box with mass $$m_{2} (= 13 \text{ kg}$$) by a wire on a frictionless pulley. What is the magnitude of the acceleration of the two boxes when the coefficient of kinetic friction between the first box $$( 8 \text{ kg} )$$ and the slope is $$0.2?$$

Gravitational acceleration is $$g=10\text{ m/s}^{2}.$$

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