When an elevator is moving up with an acceleration equal to gravity, the apparent weight of a body inside the elevator would be zero.
The apparent weight of an object is the force exerted on it by a supporting surface or object. In this case, the floor of the elevator acts as the supporting surface. When the elevator accelerates upwards with an acceleration equal to gravity, the net force on the object becomes zero. This is because the force of gravity acting downwards on the object is canceled out by the upward force exerted by the accelerating elevator.
As a result, the object experiences weightlessness or zero apparent weight. This is similar to the sensation experienced by astronauts in space when they are in freefall or orbiting around the Earth.