suppose that the surface (radius=r) of the space station is rotating at 35.8 m/s. what must be the value of r for the astronauts to weigh one-half their earth weight?
but what is m?
the condition of apparent weightlessness for the passengers can be created for a brief instant when a plane flies over the top of a vertical circle. at a speed of 215 meters per second, what is the radius of the vertical circle that the pilot must use?