Questions
A balloon of mass M is descending at a constant acceleration a. When a mass m is released from the balloon, it starts rising with the same acceleration a. Assuming that its
volume does not change, what is the value of m?
detailed solution
Correct option is B
Suppose F= upthrust due to buoyancyThen while descending, we findMg−F=Ma …..(i)When ascending, we haveF−(M−m)g=(M−m)a …….(ii)Solving Eqs. (i) and (ii), we get m=2aa+gMTalk to our academic expert!
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A block of mass kg rests on a horizontal frictionless xy-plane. What would be the acceleration of the block if it is subjected to two forces as shown in figure?
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