A 5.00 kg block is at rest on an inclined surface at angle 0 = 30.0° . The block is at rest and not sliding down the surface. Determine the magnitude of the frictional force in this experiment. (g=9.81 m/s²) L 98.0 N 49.0 N 24.5 N 42.4 N

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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?”