1.

The potential energy of a rock, having mass m and rotating at a height of\[3.2\times {{10}^{6}}m\] from the earth surface, is

A. \[-6\,\,mg{{R}_{e}}\]
B. \[-0.67\,\,mg{{R}_{e}}\]
C. \[-0.99\,\,mg{{R}_{e}}\]
D. \[-0.33\,\,mg{{R}_{e}}\]
Answer» C. \[-0.99\,\,mg{{R}_{e}}\]


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