JEE Main 2025 Physics question
A balloon and its content having mass M is moving up with an acceleration 'a'. The mass that must be released from the content so that the balloon starts moving up with an acceleration '3a' will be : (Take 'g' as acceleration due to gravity)
Answer: (3)
Solution
F–Mg=Ma, F–(M–x)g=(M–x)3a. Solving gives x = 2Ma/(g+3a)