Suppose in the diagram above, the person was pushing down at a 30° angle with 200 N of force. The desk still does not move. a. Draw a free-body diagram for the desk. b. Write the equation that describes the forces that act in the x-direction. c. Write the equation that describes the forces that act in the y-direction. d. Determine the value of the frictional force. Do the same for the normal force

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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?”