APFIVE Rotational Motion and Kinetic Friction
A disk of radius R, spinning with angular velocity ω, is placed on a rough horizontal surface. If the disk has no initial translational velocity, which physical process causes it to acquire a non-zero translational velocity?
A
Gravitational potential energy is converted to motion
B
Friction converts rotational energy to translational KE
C
The normal force creates a torque that propels the disk
D
Air resistance pushes the disk forward
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