ch08-p008 - 8 We use Eq 7-12 for Wg and Eq 8-9 for U(a The...

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(c) With y = h = 5 R , at P we find 22 5 5(3.20 10 kg)(9.80 m/s )(0.12 m) 0.19 J Um g R ==× = . (d) With y = R , at Q we have (3.20 10 kg)(9.80 m/s )(0.12 m) 0.038 J g R = (e) With y = 2 R , at the top of the loop, we find 2 2(3.20 10 kg)(9.80 m/s )(0.12 m) 0.075 J g R = (f) The new information () v i 0 is not involved in any of the preceding computations; the above results are unchanged. 8. We use Eq. 7-12 for W g and Eq. 8-9 for U . (a) The displacement between the initial point and Q has a vertical component of
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