1.

A balloon of mass M is descending with a constantacceleration g/3. When a mass m is released fromthe balloon it starts rising with the same accelerationg/3. The value of m is (Assuming that its volumedoes not change) :.2 (2)4(3) 4M(4) 2M

Answer»

While descending R = M(g - a)R = M(g - g/3)R = 2Mg/3

While risingR = (M - m)(g + a)2Mg/3 = (M - m)(g + g/3)2Mg/3 = (M - m)4g/3M = (M-m)2M/2 = M - mm = M - M/2m = M/2

Mass to be removed is M/2.



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