NEETPhysicsRotational Motion
A disc of radius R is rotating with an angular speed ω o about a horizontal axis. It is placed on a horizontal table. The coefficient of kinetic friction is µ k .Calculate the time taken for the rolling to begin.
Options
- A2R _ o _ k ( 1+ m R ² I )
- B- R _ o _ k ( 1+ m R ² I )
- CR _ o _ k ( 1- m R ² I )
- DR _ o _ k ( 1+ m R ² I )
Correct answer
D. R _ o _ k ( 1+ m R ² I )
Step-by-step solution
Correct Option is : (D) R _ o _ k ( 1+ m R ² I )