A block of mass m=10kg is being pulled with a force F as shown in the figure below. F is increased gradually until the block starts to move. If the block starts moving when F=60N, what is the coefficient of static friction between the block and the surface? Express your answer using two decimal places and take g=9.80m/s2

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Newton’s Third Law of Motion

The horse pulls the cart and the cart pulls the horse in response as per Newton third law. So the big question is, “Don’t the two forces cancel each other? How does the cart accelerate?”