Questions
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’ ?
detailed solution
Correct option is A
Let upthrust of air be Fa, thenfor downward motionmg - Fa = mafor upward motionFa−(m−Δm)=(m−Δm)aTherefore, Δm=2mag+aTalk to our academic expert!
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