If a satellite is in a sufficiently low orbit, it will encounter air drag from the...

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Physics

If a satellite is in a sufficiently low orbit, it will encounterair drag from the earth's atmosphere. Since air drag does negativework (the force of air drag is directed opposite the motion), themechanical energy will decrease. If E decreases (becomes morenegative), the radius r of the orbit will decrease. If air drag isrelatively small, the satellite can be considered to be in acircular orbit of continually decreasing radius.

a.) A satellite with mass 2140 kg is initially in a circularorbit a distance 330 km above the earth's surface. Due to air drag,the satellite's altitude decreases to 205 km . Calculate theinitial orbital speed.

b.) Calculate the increase in orbital speed.

c.) Calculate the initial mechanical energy.

d.) Calculate the change in kinetic energy.

e.) Calculate the change in gravitational potential energy.

f.) Calculate the change in mechanical energy.

g.) Calculate the work done by the force of air drag.

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