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Physics - Satellite Motion

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The polar- orbiting environmental satellites (POES) and some military satellites orbit at a much lower level in order to obtain more detailed information. POES complete an Earth orbit 14.1 times per day. What are the orbital speed and the ltitude of the POES?

  • Physics - Satellite Motion - ,

    First get the distance R from the center of the Earth

    GM/R^2 = V^2/R

    Period: P = (1/14.1)*24 hours*3600 s/h = 6128 s

    2 pi*R/P = V

    Solve the two independent equations for V and R.

    Once you have R, subtract the radius of the Earth for altitude.

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