Rotational MotionHard
Question
A uniform circular disc placed on a rough horizontal surface has initially velocity v0 and an angular velocity ω0 as shown in the figure. The disc comes to rest after moving some distance in the direction of motion. 
Then is
Then is Options
A.1/2
B.1
C.3/2
D.2
Solution
As the disc comes to rest,
So 0 = v0 - μgt ⇒ t =
Also 0 = ω0 - αt ⇒ t =
Thus
⇒
So 0 = v0 - μgt ⇒ t =
Also 0 = ω0 - αt ⇒ t =
Thus
⇒
Create a free account to view solution
View Solution FreeMore Rotational Motion Questions
A solid cylinder and a hollow cylinder, both of the same mass and same external diameter are released from the same heig...A diver before he plungs into water, contracts his body, there by :-...A circular platform is mounted on a frictionless vertical axle. Its radius R = 2 m and its moment ofinertia about the ax...The moment of inertia of a rod about an axis through its centre and perpendicular to it is ML2 (where M is the mass and ...The figure shows a system consisting of (i) a ring of outer radius 3R rolling clockwise without slipping on a horizontal...