A uniform, thin, solid door has a height of 2.2 m, a width of 0.87 m, and a mass of 23 kg. Find its moment of inertia for rotation on its hinges. Are any of the data unnecessary? the width of the door is unnecessary the mass of the door is unnecessary no; all of the data is necessary the height of the door is unnecessary First off, the height of the door should be unnecessary since the distance in moment of inertia is perpendicular to the force being applied? Second I'm having problems finding what I equation to use for a door about the hinge?