Q5) The 50-kg crate shown rests on a rough horizontal surface for which the coefficient of kinetic friction is #x=0.3. An electrically powered winch is utilized to accelerate the crate at a constant rate until it attains a speed of v-Sm's within a distance of s=20m. If the motor and the winch have an efficiency of n-0.70, determine the power that must be supplied to the motor when s= 20 m.

Q5) The 50-kg crate shown rests on a rough horizontal surface for which the coefficient of kinetic friction is #x=0.3. An electrically powered winch is utilized to accelerate the crate at a constant rate until it attains a speed of v-Sm's within a distance of s=20m. If the motor and the winch have an efficiency of n-0.70, determine the power that must be supplied to the motor when s= 20 m.

International Edition---engineering Mechanics: Statics, 4th Edition

4th Edition

ISBN:9781305501607

Author:Andrew Pytel And Jaan Kiusalaas

Publisher:Andrew Pytel And Jaan Kiusalaas

Chapter7: Dry Friction

Section: Chapter Questions

Problem 7.78P: The figure shows a steel bar being processed by a rolling mill. Given that P=80kN and r =0.016,...

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