Physics

Problem

500\,\text{kg}

satellite is to be shifted from a circular orbit of radius

2R_{\oplus}

to a circular orbit of radius

4R_{\oplus}

around the Earth. Ignore atmospheric drag. How much work must be done on the satellite (positive if energy must be supplied)? a)

-3.9\times10^{9}\,\text{J}

1.95\times10^{9}\,\text{J}

3.9\times10^{9}\,\text{J}

7.8\times10^{9}\,\text{J}