Answer
Yes.
Work Step by Step
The object is in equilibrium only if the net force is zero.
The net force acting on the balloon is zero.
There is a force of mg pulling down on it, and an equal-magnitude buoyant force pushing up on it.
University Physics with Modern Physics (14th Edition)
by Young, Hugh D.; Freedman, Roger A.
Published by
Pearson
ISBN 10:
0321973615
ISBN 13:
978-0-32197-361-0
Chapter 4 - Newton's Laws of Motion - Problems - Discussion Questions - Page 123: Q4.3
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