7. Friction, Inclines, Systems
Stacked Blocks
Problem 6a
Textbook Question
Textbook QuestionA block of mass m is at rest at the origin at t = 0. It is pushed with constant force Fβ from π = 0 to π = L across a horizontal surface whose coefficient of kinetic friction is ΞΌβ = ΞΌβ ( 1 - π/L ) . That is, the coefficient of friction decreases from ΞΌβ at π = 0 to zero at π = L. b. Find an expression for the block's speed as it reaches position L.
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