p0398 - 362 CHAPTER 3. EFFECTS OF GRAVITY ON PRESSURE 3.98...

Info iconThis preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
362 CHAPTER 3. EFFECTS OF GRAVITY ON PRESSURE 3.98 Chapter 3, Problem 98 To solve, we begin by adding to the figure all of the forces that are acting. There are hydrostatic forces from the left and right fluids, which we name F f and F r ,respec t ive ly . Thetens ionforceinthecab leis T and there is a reaction force at the hinge, F H .F ina l ly , the submerged body is acted on by its weight, W , and the buoyancy force, F buoy . Figure 3.78: Gate, weight and pulley arrangement. To calculate the hydrostatic force and moment from the left, note that the gate is a rectangle with height 2 H and width 1 2 H (out of the page). Thus, its centroid, area and moment of inertia are z f = H, A f =2 H · 1 2 H = H 2 ,I f = 1 12 w 1 2 H W (2 H ) 3 = 1 3 H 4 Also, the center of pressure is located at z cp f = z f + I f z f A f = H + H 4 / 3 H · H 2 = 4 3
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 2
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 3

p0398 - 362 CHAPTER 3. EFFECTS OF GRAVITY ON PRESSURE 3.98...

This preview shows document pages 1 - 2. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online