Find the minimum force required to drag a hard polythene plate of area 2 m^2 on a thin flim of oil of thickness 0.25 cm and n = 15 poise. Assume the speed of the plate is 10 cm/s.
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Find the minimum force required to drag a hard polythene plate of area 2 m^2 on a thin flim of oil of thickness 0.25 cm and n = 15 poise. Assume the speed of the plate is 10 cm/s. Find the minimum force required to drag a hard polythene plate of area 2 m^2 on [...]