A uniform disk of radius 1.2 m and mass 0.60 kg is rotating at 25 rad/s around an axis that passes through its center and is perpendicular to the disk.A rod makes contact with the rotating disk with a force of 4.5 N at a point 0.75 m from the axis of rotation as shown.The disk is brought to a stop in 5.0 s.What is the coefficient of kinetic friction for the two materials in contact?
A)0.22
B)0.15
C)0.64
D)0.37
E)0.55

Question

A uniform disk of radius 1.2 m and mass 0.60 kg is rotating at 25 rad/s around an axis that passes through its center and is perpendicular to the disk.A rod makes contact with the rotating disk with a force of 4.5 N at a point 0.75 m from the axis of rotation as shown.The disk is brought to a stop in 5.0 s.What is the coefficient of kinetic friction for the two materials in contact? 
A)0.22 
B)0.15 
C)0.64 
D)0.37 
E)0.55

Quizplus · Accepted Answer

The Answer of A uniform disk of radius 1.2 m and mass 0.60 kg is rotating at 25 rad/s around an axis that passes through its center and is perpendicular to the disk.A rod makes contact with the rotating disk with a force of 4.5 N at a point 0.75 m from the axis of rotation as shown.The disk is brought to a stop in 5.0 s.What is the coefficient of kinetic friction for the two materials in contact? 
A)0.22 
B)0.15 
C)0.64 
D)0.37 
E)0.55

A Uniform Disk of Radius 1