problem05_96

University Physics with Modern Physics with Mastering Physics (11th Edition)

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5.96: (a) h mi 80 is s m 7 . 35 in SI units. The centripetal force needed to keep the car on the road is provided by friction; thus m 170 or m 171 ) s m (0.76)(9.8 s) m 7 . 35 ( 2 2 s 2 s 2 = = = = g v r mg r mv μ μ (b) If : 20 . 0 s = μ h mi 41 about or s m 3 . 18 s m 2 . 335 ) s m (9.8 (0.20) m) 171 ( 2 2 2 s 2 = = = = v g
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Unformatted text preview: : 37 . s = h mi 56 about or s m 9 . 24 s m 620 ) s m (9.8 (0.37) m) 171 ( 2 2 2 2 = = = v v The speed limit is evidently designed for these conditions....
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