Video Solution Problem for Chapter 9 Section 4 Fluid Pressure on a Gravity Dam.

Question

Video Solution Problem for Chapter 9 Section 4 Fluid Pressure on a Gravity Dam. Part A 10 ft Watch the following video, then answer the question(s) 24 ft 30 ft 9 ft 19 ft Calculate the resultant force due to fluid pressure acting on the concrete dam section of unit width (i.e. 1 foot wide) shown. Also, determine the location of the resultant force from the bottom of the dam. Use specific wt of water of 62.4 lb/ft3 28.1 k/ft, 20 ft 936 lb/ft, 10 ft 28.1 k/ft, 10 ft 936 lb/ft, 20 ft Submit My Answers Give Up

Explanation / Answer

Resultant force = average pressure * area

= rho*g*h/2* (b*h)

= 62.4*30/2*30*1

= 28080 lb = 28.1k,

location = h/3 from bottom = 30/3 = 10 ft

Third option is correct

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