UNIVERSE
SATELLITESICY BODIES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Predict the magnitude of the gravitational force a 66.5 kg person would experience while standing on the surface of Mars:Mass 6.42 × 10^23 kgRadius 3.40 × 10^6 m
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246 N
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38.5 N
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651 N
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0.692 N
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Explanation:
Detailed explanation-1: -Answer and Explanation: Therefore, the gravitational force exprienced by the person is 662 N, correct to three significant figures.
Detailed explanation-2: -Weight (magnitude) = Fg = mg. Details of the calculation: Weight = Fg = mg = (60 kg)*(9.8 m/s2) = 588 N.
Detailed explanation-3: -Gravitational force on a body on the surface of the earth = mass x acceleration due to gravity = 10 kg x 9.8 ms-2 = 98 N.
Detailed explanation-4: -Hence, magnitude of the gravitational force (F) between the earth and the body is given by, F=GM×mR2=6.67×10−11×6×1024×1(6.4×106)2 = 9.77 N = 9.8 N (approx).
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