A disk of radius R and mass M has a nonuniform surface charge density sigma = Cr, where C is a constant and r is measured from the center of the disk. find the constant c in terms of the mass M and R? **Figure P24.49**The diagram depicts a circular disk with its center marked. An arrow radiates outward from the center to the edge, with the length labeled as \( R \), representing the radius of the disk. In front of the disk is a point labeled \( P \), situated along an extended line perpendicular to the plane of the disk. The distance from the center of the disk to the point \( P \) is marked as \( x \). This setup is likely used to illustrate a concept in electrostatics or magnetism, such as calculating electric field, potential, or force at the point \( P \) due to the charged disk.

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