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If atmosphere exerts only frictional force on a moving block which is given as \( \overrightarrow{\mathrm{F}}=-\mathrm{k} \overrightarrow{\mathrm{v}} \) then
\( \mathrm{P} \) what is the maximum possible rate of heat loss

W if a ball of mass ' \( \mathrm{m} \) ' is dropped from sufficient height under gravity:-
-(1) \( \frac{\mathrm{m}^{2} \mathrm{~g}^{2}}{\mathrm{k}} \)
(2) \( \frac{\mathrm{mg}}{\mathrm{k}} \)
(3) \( \frac{\mathrm{k}}{\mathrm{m}^{2} \mathrm{~g}^{2}} \)
(4) \( \frac{m^{4} g^{4}}{k^{3}} \)
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