Solution: A 20 kg block and having dimensions of .2 m on each side slides down a 15 degree incline under its own weight. Between the bottom surface of the block and the incline is a film of oil .025 mm thick. The viscosity of the oil is .1 N-sec/m^2. Find the component of the weight of the block directed down the incline. Derive a symbolic algebraic expression for the viscous shear foce acting on the block (in terms of relevant variables) and determine the direction of this force. Derive a symbolic algebraic soluution for the velocity of the block (assuming constant velocity) as it slides down the inlcine.

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A 20 kg block and having dimensions of .2 m on each side slides down a 15 degree incline under its own weight. Between the bottom surface of the block and the incline is a film of oil .025 mm thick. The viscosity of the oil is .1 N-sec/m^2. Find the component of the weight of the block directed down the incline. Derive a symbolic algebraic expression for the viscous shear foce acting on the block (in terms of relevant variables) and determine the direction of this force. Derive a symbolic algebraic soluution for the velocity of the block (assuming constant velocity) as it slides down the inlcine.