Question

If A is the areal velocity of a planet of mass M , it's angular momentum is......................

Answer 1

Angular momentum of an object with moment of inertia \(I\) and angular velocity \(\vec \omega\) is given by \(\vec L = I \vec \omega\). What are \(I\) and \(\vec \omega\) for the planet?

Answer 2

Hint, for a point particle of mass \(m\) at distance \(r\) from the axis of rotation, the moment of inertia is given by \(I=mr^2\).