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`        A balloon of mass is descending at a constant acceleration alpha .When a mass m is released from a balloon it starts rising with the same acceleration alpha.Assuming that it's value does not change,what is the value of m?`
one year ago

Arun
23330 Points
```							 Let the force due to buoyancy be B.In the first case the equation will beMg - B = MsIn the second case the equation will beB - (M-m)g = (M-m)sSince the volume is unchanged, the force of Buoyancy remains unchanged as same amount of air is displaced even now and the new mass is (M-m)Adding the two equations we get,mg = (2M-m)sor m(g+s)=2Msor m=2Ms/(g+s)
```
one year ago
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