Engineers at Otis Elevator Company are testing a new high-speed elevator installed in the Burj Khalifa.
When the elevator accelerates upward, passengers feel heavier. This happens because the floor pushes upward with greater force, called the normal force.
Engineer Rahul must calculate the normal force acting on a passenger when the elevator accelerates upward.
This ensures the elevator cables and floor are strong enough for safe operation.
A person of mass m kg stands inside an elevator accelerating upward with acceleration a m/s².
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Last Solution submitted on Feb 16, 2026

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