A man drags a trunk up a ramp by pulling on a rope with a force of 100 N, intending to load it onto a truck as shown in the figure. He assumes the x axis of his reference frame parallel to the ramp. a) What will be the acceleration experienced by the trunk, if its mass is 5 kg? b) What is the normal force? c) If the coefficient of kinetic friction is 0.1, what will be the friction force and what will be the resultant force parallel to the ramp

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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?”