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When a rubber balloon held between the hands is pressed, its shape changes. This happens because:
$(a)$. balanced forces act on the balloon
$(b)$. unbalanced forces act on the balloon
$(c)$. frictional forces act on the balloon
$(d)$. gravitational forces act on the balloon
When a rubber balloon held between the hands is pressed, its shape changes. This happens because balanced forces act on the balloon as only balanced force can change the shape and size of an object.
Therefore, option (a) is correct.
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