Given a 4 m diameter round hatch placed on an inclined surface (60° to the surface of the water) for a tank filled with water. The hatch is fixed on the axis of horizontal rotation, which passes through the center along the entire length of the diameter. The axis of rotation is located 10 m under water. The hatch cannot open clockwise, as it is limited by the brake unit. Task: (a) What is the resulting force acting on the hatch? b)By what size should the moment around the axis of rotation be greater to open the lid? (Answer: a)1233 kN; (b) 106,7 kNm)

Principles of Physics: A Calculus-Based Text
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Author:Raymond A. Serway, John W. Jewett
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Chapter15: Fluid Mechanics
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Given a 4 m diameter round hatch placed on an inclined surface (60° to the
surface of the water) for a tank filled with water. The hatch is fixed on the axis
of horizontal rotation, which passes through the center along the entire length
of the diameter. The axis of rotation is located 10 m under water. The hatch
cannot open clockwise, as it is limited by the brake unit.
Task: (a) What is the resulting force acting on the hatch?
b)By what size should the moment around the axis of rotation be greater to
open the lid?
(Answer: a)1233 kN; (b) 106,7 kNm)
Transcribed Image Text:Given a 4 m diameter round hatch placed on an inclined surface (60° to the surface of the water) for a tank filled with water. The hatch is fixed on the axis of horizontal rotation, which passes through the center along the entire length of the diameter. The axis of rotation is located 10 m under water. The hatch cannot open clockwise, as it is limited by the brake unit. Task: (a) What is the resulting force acting on the hatch? b)By what size should the moment around the axis of rotation be greater to open the lid? (Answer: a)1233 kN; (b) 106,7 kNm)
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