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An isosceles triangular plates of base 3 m and altitude 3 m is immersed in oil vertically with its base coinciding with the free surface of the oil of relative density 0.8. Determine the total thrust. |
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Answer» Area of the plate `=1/2xx"base"xx"altitude"` `=1/2xx3xx3=4.5m^(2)` Density of oil` =0.8xx1000-800kgm^(-3)` Depth of `CG` of the plate from the free surface `=(1/3)3=1m` Now, total thrust on the plate `=("plate area" )xx("pressure at the CG of the plate")` `=(4.5)(800x10xx1)=36kN` |
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