A disc of radius has ω=2 rad / s and speed v C =2 m / s. The speed of the plank for pure rolling (in m / s ) is .

Question

A disc of radius has ω=2 rad / s and speed v C =2 m / s. The speed of the plank for pure rolling (in m / s ) is . (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

As disc if rolling the speed of point of contact of disc with plank should be equal to velocity of the plank V text plank =v textdisc +ω R

Q. A disc of radius has $ω = 2 r a d / s$ and speed $v_{C} = 2 m / s$ . The speed of the plank for pure rolling (in $m / s$ ) is ____.