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QAIPM-2014-Ph-1423: NEET 2014 Physics - Class 11 AIPM-2014-Ph-1423 Solution: A balloon with mass m is descending down with an acceleration a …

A balloon with mass m is descending down with an acceleration a (where a < g). How much mass should be removed from it so that it starts moving up with an acceleration a?

\frac{2ma}{g+a}

\frac{2ma}{g-a}

\frac{ma}{g+a}

\frac{ma}{g-a}

Multiple Choice Options

A ${{2ma} \over {g + a}}$ g + a 2 ma _
B ${{2ma} \over {g - a}}$ g _ a 2 ma _
C ${{ma} \over {g + a}}$ g + a ma _
D ${{ma} \over {g - a}}$ g _ a ma _

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