With what speed does the mass exit the rough region

Reference no: EM13280396

A spring (k=100N/m) is squished x=.40 m with a mass m=1 kg held against it. The mass is released from rest. The horizontal surface is frictionless EXCEPT for a rough patch of length L=1.2 m. Along length L a constant friction force of 5 N acts when the mass movies across it. With what speed v does the mass exit the rough region?

Reference no: EM13280396

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