Similarly , when an object is dropped from a tower , the time it takes to fall to the ground remains the same with a scale model of the tower on a scale model of the Earth .
Hence velocities are halved and orbital periods remain the same .
When an object is dropped from a tower , the time it takes to fall to the ground remains the same with a scale model of the tower on a scale model of the Earth .
Hence velocities are halved and orbital periods remain the same .