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- Homework Statement
- Find cumulative mass of a disk

- Relevant Equations
- Exponential mass function

I want to find the cumulative mass m(r) of a mass disk. I have the mass density in terms of r, it is an exponential function:

ρ(r)=ρ0*e^(-r/h)

A double integral in polar coordinates should do, but im not sure about the solution I get.

ρ(r)=ρ0*e^(-r/h)

A double integral in polar coordinates should do, but im not sure about the solution I get.