Question: A 1 3 . 0 - kg backpack sits on an elevator floor. If the contact area between the backpack and the floor is 0

A 13.0-kg backpack sits on an elevator floor. If the contact area between the backpack and the floor is 0.110 m2 and the elevator accelerates upward 2.00 m/s2, what is the excessive stress experienced by the floor beneath the backpack?

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