An elastic air balloon having a diameter of 30 cm is attached to the base of a container partially filled with water at 14°C. If the pressure of the air above the water is gradually increased from 100 kPa to 1.6 MPa, will the force on the cable change? If so, what is the percent change in the force? Assume the pressure on the free surface and the diameter of the balloon are related by P = CDn, where C is a constant and n = 22. The weight of the balloon and the air in it is negligible.

Elements Of Electromagnetics
7th Edition
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Sadiku, Matthew N. O.
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An elastic air balloon having a diameter of 30 cm is
attached to the base of a container partially filled with water
at 14°C. If the pressure of the
air above the water is gradually increased from 100 kPa to
1.6 MPa, will the force on the cable change? If so, what is
the percent change in the force? Assume the pressure on the
free surface and the diameter of the balloon are related by
P = CDn, where C is a constant and n = 22. The weight of
the balloon and the air in it is negligible.

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