Physics

Physics

Problem

A spherical body of radius RR consists of a fluid of constant density and is in equilibrium under its own gravity. If P(r)P(r) is the pressure at r(r<R)r(r < R), then the correct option(s) is (are) a. P(r=0)=0P(r=0)=0 b. P(r=3R/4)P(r=2R/3)=6380\frac{P(r=3R/4)}{P(r=2R/3)} = \frac{63}{80} c. P(r=3R/5)P(r=2R/5)=1621\frac{P(r=3R/5)}{P(r=2R/5)} = \frac{16}{21} d. P(r=R/2)P(r=R/3)=2027\frac{P(r=R/2)}{P(r=R/3)} = \frac{20}{27}

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