4. With normal barometric pressure at sea level, the atmospheric pressure at an elevation of 1215.5 m in terms of height of mercury is equal to. mm. Unit weight of air is equal to 11 N/m³ and Hg = 760 mm if air at sea level. 5. A dam with 4 meters on top, 10 m at the bottom and 20 meters high has water with depth of 15 meters acting on its vertical side. What is the factor of safety against sliding if the coefficient of friction is 0.80? 6. If a 5-kg-steel-plate is attached to an end of a 0.1 x 0.3 x 1.2 m wooden pole, what is the length of the pole protruding above the water? Sp. gr of wood equal to 0.50 and 7.8 for steel.
4. With normal barometric pressure at sea level, the atmospheric pressure at an elevation of 1215.5 m in terms of height of mercury is equal to. mm. Unit weight of air is equal to 11 N/m³ and Hg = 760 mm if air at sea level. 5. A dam with 4 meters on top, 10 m at the bottom and 20 meters high has water with depth of 15 meters acting on its vertical side. What is the factor of safety against sliding if the coefficient of friction is 0.80? 6. If a 5-kg-steel-plate is attached to an end of a 0.1 x 0.3 x 1.2 m wooden pole, what is the length of the pole protruding above the water? Sp. gr of wood equal to 0.50 and 7.8 for steel.
Chapter2: Loads On Structures
Section: Chapter Questions
Problem 1P
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Transcribed Image Text:4. With normal barometric pressure at sea level, the atmospheric
pressure at an elevation of 1215.5 m in terms of height of
mercury is equal to
mm. Unit weight of air is equal to 11
N/m³ and Hg = 760 mm if air at sea level.
5. A dam with 4 meters on top, 10 m at the bottom and 20 meters
high has water with depth of 15 meters acting on its vertical side.
What is the factor of safety against sliding if the coefficient of
friction is 0.80?
6. If a 5-kg-steel-plate is attached to an end of a 0.1 x 0.3 x 1.2 m
wooden pole, what is the length of the pole protruding above the
water? Sp.gr of wood equal to 0.50 and 7.8 for steel.
7. Which of the statement is true?
a.
Center of buoyancy is always below the center of mass of
stability.
b.
c.
Buoyant force on any body is equal to the fluid displaced.
Center of mass of displaced fluid is coincident with center
of mass of an object.
d. None of these
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