A tank of base area 4 m 2 is initially filled with water up to height 2 m. An object of uniform cross-section 2 m 2 and height 1 m is now suspended by wire into the tank, keeping distance between base of tank and that of object 1 m. Density of the object is 2000kg/m 3 . Take atmospheric pressure 1 × 10 5 N/m 2 ; g = 10 m/s 2
The tension in the wire is:
Text Solution
Verified by ExpertsThe correct answer is:
B
By F.B.D.T + P 2 A = mg + P 1 A
T = mg + (P 1 - P 2 ) A = mg-(P 2 -P 1 ) A
= 2 × 2000 × 10-(.2 × 10 5 ) = .4 × 10 5 -0.2 × 10 5 = 0.2 × 10 5 N
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