a circular lamina of radius a and centre O has mass per unit area of kx^2, where x is the distance from O and k is a constant. If the mass of the lamina is M ,find in terms of M and a, the moment of inertia of the lamina about an axis through O and perpendicular to the lamina.
a circular lamina of radius a and centre O has mass per unit area of kx^2, where x is the distance from O and k is a constant. If the mass of the lamina is M ,find in terms of M and a, the moment of inertia of the lamina about an axis through O and perpendicular to the lamina.