PPT Slide

Reducing:

G = 6.67x10 m kg s ; P = 33x10 s

=>

but

so

-11

3

-1

-2

Crab

-3

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Stage 1: cancel m from both sides of the equation and substitute v=2pr/P.

Stage 2: simply rearranging the equation to put M/4pr^3 on left

Stage 3: substituting M/4pr^3 into density equation