Using a rope inclined 20° above the horizontal, a girl pulls a sled weighing 20 kilograms across the snow. Given that the coefficient of static friction between the sled and the snow is µs = 0.35, what tension on the rope must the girl exert to start the sled moving?

Principles of Physics: A Calculus-Based Text
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ISBN:9781133104261
Author:Raymond A. Serway, John W. Jewett
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Chapter5: More Applications Of Newton’s Laws
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Using a rope inclined 20° above the horizontal, a girl pulls a sled weighing 20 kilograms across the snow. Given that the coefficient of static friction between the sled and the snow is  µs = 0.35, what tension on the rope must the girl exert to start the sled moving? This is Particle Dynamics and Friction, pls show full solution

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