Hi im kind of new to the forum nice to be here! here is my question.(adsbygoogle = window.adsbygoogle || []).push({});

1. The problem statement, all variables and given/known data

A satellite is kept in a circular orbit 300km above the surface of the earth by the force of gravity. At this altitude the acceleration due to gravity is 8.9 m/s. The radius of the earth is 6.4*10^6m

a) calculate the period of the satellite

b) calculate the speed of the satellite

2. Relevant equations

Ac=(4(Pi^2)(r))/(T^2)

Where ac is the acceleration

T is the period

r is the radius

V=(2(pi)r)/(T)

3. The attempt at a solution

a)

Using the first equation listed

T= (2(pi))(r/ac)^(1/2)

r=(6.4*10^6)+(300km)(1000m/1km)

ac=8.9m/s

T=5451.6 seconds

b) Using our known T,

V=(2Pi)(6700000)/(5451.6)

V=7722 m/s

Thanks in advance, I feel I may not have the concept down well enough and this may not be the way to do it.

1. The problem statement, all variables and given/known data

2. Relevant equations

3. The attempt at a solution

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# Homework Help: Centripetal forces and satellites

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