ch08-p114 - of part (a) all over again. Another approach is...

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114. (a) The integral (see Eq. 8-6, where the value of U at x = is required to vanish) is straightforward. The result is U ( x ) = Gm 1 m 2 / x . (b) One approach is to use Eq. 8-5, which means that we are effectively doing the integral
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Unformatted text preview: of part (a) all over again. Another approach is to use our result from part (a) (and thus use Eq. 8-1). Either way, we arrive at W = G m 1 m 2 x 1 G m 1 m 2 x 1 + d = G m 1 m 2 d x 1 ( x 1 + d ) ....
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