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Physics

Mechanics

Easy

Question

$text Two satellites of masses end text m subscript 1 text and end text m subscript 2 open parentheses m subscript 1 greater than m subscript 2 close parentheses text are revolving round the earth in circular orbits end text text of radius end text r subscript 1 text and end text r subscript 2 open parentheses r subscript 1 greater than r subscript 2 close parentheses text respectively. Which of the following statements is true regarding end text text their speeds end text v subscript 1 text and end text v subscript 2 ?$

$v_{1} = v_{2}$
$v_{1} < v_{2}$
$v_{1} > v_{2}$
$\frac{v_{1}}{r_{1}} = \frac{v_{2}}{r_{2}}$

The correct answer is: $v subscript 1 less than v subscript 2$

$v equals square root of fraction numerator G M over denominator r end fraction end root text if end text r subscript 1 greater than r subscript 2 text then end text v subscript 1 less than v subscript 2$

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