A triangular gate with a base width of $2 \mathrm{~m}$ and a height of $1.5 \mathrm{~m}$ lies in a vertical plane. The top vertex of the gate is $1.5 \mathrm{~m}$ below the surface of a tank which contains oil of specific gravity 0.8 . Considering the density of water and acceleration due to gravity to be $1000 \mathrm{~kg} / \mathrm{m}^{3}$ and $9.81 \mathrm{~m} / \mathrm{s}^{2}$ respectively, the hydrostatic force (in $\mathrm{kN}$ ) exerted by the oil on the gate is

A triangular gate with a base width of $2 \mathrm{~m}$ and a height of $1.5 \mathrm{~m}$ lies in a vertical plane. The top vertex of the gate is $1.5 \mathrm{~m}$ below the surface of a tank which contains oil of specific gravity 0.8 . Considering the density of water and acceleration due to gravity to be $1000 \mathrm{~kg} / \mathrm{m}^{3}$ and $9.81 \mathrm{~m} / \mathrm{s}^{2}$ respectively, the hydrostatic force (in $\mathrm{kN}$ ) exerted by the oil on the gate is

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