A 619 kg satellite is in circular orbit 7.84x106 m above the surface of the Earth. Find:(adsbygoogle = window.adsbygoogle || []).push({});

a) the acceleration due to gravity created by the Earth at the distance of the satellite.

correct check mark m/s2

b) the weight of a 70.4 kg astronaut inside the satellite.

Equations:

Fg = G M earth M / r[tex]^{2}[/tex]

Part A is solved. However, part b is simple enough but i seem to be having trouble with it.

My initial attempt was to use the first part of the answer and use Newton's formula F = ma.

However, my next attempt is to use:

Fg = G M(earth) M(astronaut) / r[tex]^{2}[/tex]

However, one thing gives me trouble. Should the astronaut's mass be used or should the astronaut and the satellite. If I'm off track I would appreciate someone's help. Thanks.

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# Homework Help: Gravity Problem

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