A mercury thermometer is placed in a gravity free hall without touc... VIDEO
A mercury thermometer is placed in a gravity free hall without touching anything. As temperature rises
\( \mathrm{P} \) mercury expands and ascend in thermometer. If height ascend by mercury in thermometer is \( h \) then by
\( \mathrm{W} \) what height centre of mass of " mercuny and thermometer" system descend?
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