An elevator accelerates upward at 4 m/s^2. The cable can safely handle a tension up to 5000 N. Suppose the elevator itself weighs 1000 N. How many 75 kg. People can the elevator safely carry upward like this? a) 3 people b) 4 people c) 5 people d) 2 people e) 6 people

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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?”