Required information You are standing on a bathroom scale inside an elevator. Your weight is 202 lb, but the reading of the scale is 167 Ib. Vhat is the acceleration of the elevator? If the acceleration is in upward direction, enter a positive value and if it is downward direction, enter a negative value. m/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?”