A 15 M LENGTH OF HOSE IS WOUND AROUND A REEL WHICH IS INITIALLY AT REST. THE MOMENT OF INERTIA OF THE REEL OF 0.44KGM^2 AND ITS RADIUS IS 0.160M. WHEN THE REEL IS TURNING FRICTION AT THE AXLE EXERTS A TORQUE OF MAGNITUDE 3.40NM ON THE REEL. IF THE HOSE IS PULLED SO THAT THE TENSION IN IT REMAINS A CONSTANT 25N, HOW LONG DOES IT TAKE TO COMPLETELY UNWIND THE HOSE FROM THE REEL? NEGLECT THE MASS AND THICKNESS OF THE HOSE ON THE REEL AND ASSUME THAT THE HOSE UNWINDS WITHOUT SLIPPING.
2 answers