cw18 - 67 10-11 N m 2 / kg 2 . F E = GmM E R 2 E = (6 . 67...

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patel (kp9583) – CW18 – Mackie – (20211) 1 This print-out should have 2 questions. Multiple-choice questions may continue on the next column or page – fnd all choices beFore answering. 001 (part 1 oF 2) 10.0 points Compare the gravitational Force on a 28 . 5 kg mass at the surFace oF the Earth (with ra- dius 6 . 4 × 10 6 m and mass 6 × 10 24 kg) with that on the surFace oF the Moon p with mass 1 81 . 3 M E and radius 0 . 27 R E P . What is the Force on the Earth? Correct answer: 278 . 459 N. Explanation: Let : m = 28 . 5 kg , M E = 6 × 10 24 kg , R E = 6 . 4 × 10 6 m , and G = 6 .
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Unformatted text preview: 67 10-11 N m 2 / kg 2 . F E = GmM E R 2 E = (6 . 67 10-11 N m 2 / kg 2 ) (28 . 5 kg) (6 . 4 10 6 m) 2 (6 10 24 kg) = 278 . 459 N . 002 (part 2 oF 2) 10.0 points What is it on the Moon? Correct answer: 46 . 9833 N. Explanation: Let : M M = 81 . 3 M E and R M = 0 . 27 R E . F = GmM M R 2 M = Gm (0 . 27 R E ) 2 M E 81 . 3 = GmM E R 2 E 1 (0 . 27) 2 (81 . 3) = F E (0 . 27) 2 (81 . 3) = 278 . 459 N (0 . 27) 2 (81 . 3) = 46 . 9833 N ....
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