Question: Problem 3 ( 1 5 points ) A lake underwater habitat is located at a depth of 1 0 m as shown below. A 4

Problem 3(15 points)
A lake underwater habitat is located at a depth of 10m as shown below. A 4-m side square hatch is located in an inclined wall and hinged on one edge. The weight of the hatch is 100KN and is applied at the mid-point. The friction in the hinge imposes a moment resisting movement equal to 5KN.m. The freshwater V=9,810Nm3. What is the minimum air pressure, p1. within the habitat that will allow us to, open the hatch with minimal force.
Problem 3 ( 1 5 points ) A lake underwater

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