Unformatted text preview: R and thickness dR . Next, break up the shell into rings of width R dθ , just like in lecture. Calculate the potential d Φ due to this small ring, using the fact thatGdm/r is the potential due to a point mass dm at a distance r from the mass. Then, integrate the expression over the whole ball to ﬁnd the total potential. Hint: Do the θ integral ﬁrst, by substituting u for the expression under the square root....
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 Spring '08
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 Physics, mechanics, Vector Space, Mass, break up, radius R. Mimic

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