The two arms of a U-tube are not identical, one having twice the diameter of the other.A cork in the narrow arm requires a force of 16 N to remove it.The tube is filled with water and the wide arm is fitted with a piston.The minimum force that must be applied to the piston to push the cork out is:
A)4 N
B)8 N
C)16 N
D)32 N
E)64 N

Question

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The Answer of The two arms of a U-tube are not identical, one having twice the diameter of the other.A cork in the narrow arm requires a force of 16 N to remove it.The tube is filled with water and the wide arm is fitted with a piston.The minimum force that must be applied to the piston to push the cork out is:
A)4 N
B)8 N
C)16 N
D)32 N
E)64 N

The Two Arms of a U-Tube Are Not Identical, One