Answered: Two planets are orbiting a star. Planet…

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Question

Two planets are orbiting a star. Planet A is three times as far away from the star as Planet B, but the gravitational force acting on each planet is the same. How many times more massive is Planet A than Planet B?

Group of answer choices

A Six times as massive

B. Three times as massive

C. Four times as massive

D. Nine times as massive

E. Twice as massive

F. None of the above

Expert Solution

Step 1

let mass of star = M

mass of planet A = $M_{a}$

mass of planet B = $M_{b}$

distance of planet A from star = $R_{a}$

distance of planet B from star = $R_{b}$

also,

$R_{a} = 3 R_{b}$

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