Chapter 13, Problem 79P

(a)

To determine

To show: The pressure and radius of the star at equilibrium are related by $p_0=\frac{GMm}{4\pi r_0^4}$.

(b)

To determine

To show: Using binomial expansion the right hand side of the equation can be written as $-\frac{\left(GMm\right)}{r_0^3}x$.

(c)

To determine

An expression for the period of oscillation of the star.

(d)

To determine

The period of the variable star Delta Cephei.