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InterviewSolution
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A square plate of 20 cm side moves over another plate with velocity `5 cm s^(-1)`, both plates immersed in water. If the viscous force is `0.205 gf` and viscosity of water is 0.01 poise, what is the separation between the plates? |
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Answer» Area of plate, `A= 20 xx 20 ` `= 400 cm^(2)` `d upsilon = 5 cm s^(-1), F=0.205 gf` `= 0.205 xx 980 dyn e`, `eta = 0.01 poise , dx = ?` Now `F= eta A (d upsilon)/(dx) or dx = (eta A d upsilon)/(F)` `:. Dx = (0.01 xx 400 xx 5)/(0.205 xx 980) = 0.1 cm`. |
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