A satellite travels at in a circular orbit of radius around Earth

PHYSICS · Subjective · CBSE · Physics · System of Particles and Rotational Motion · System of Particles and Rotational Motion

Problem

A 1.0×103 kg1.0\times10^{3}\,\text{kg} satellite travels at 3.9×103 m/s3.9\times10^{3}\,\text{m/s} in a circular orbit of radius 3.0×107 m3.0\times10^{7}\,\text{m} around Earth. A brief outward thrust moves the satellite to a new circular orbit of radius 5.0×107 m5.0\times10^{7}\,\text{m}. Assuming the thrust is quick enough that the satellite’s angular momentum about Earth’s center is conserved during the maneuver, calculate the satellite’s speed in the new orbit.

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