If the differential size-frequency distribu- tion of a group of objects that have equal densities can be adequately described by a power law in radius of the form N(R)dR ∞ R-3, then it can also be described as a power law in mass of the form N(m)dm ∞ m¯*. Derive the relationship between g and x.

If the differential size-frequency distribu- tion of a group of objects that have equal densities can be adequately described by a power law in radius of the form N(R)dR ∞ R-3, then it can also be described as a power law in mass of the form N(m)dm ∞ m¯*. Derive the relationship between g and x.