11Won't it start rolling instantly? [7]
a body of moment of inertia I is rotated with angular velocity ω & then its kept on rough horizontal surface. find the expression for time in which it starts rolling.
-
UP 0 DOWN 0 0 11
11 Answers
1yup ani i was thinking dat but i m really nt sure i m weak at rotation dats why i asked fr the method
11Moreover it's a rough surface so that will only enhance rolling [4]
1dats true but it will not instantly start rolling (nt so sure but i strongly feel that)
11Why shouldn't it start rolling immediately?
Btw is there any difference between pure rolling and rolling without slipping?
1sry ani i m really weak in rotation
pls smone giv the method
1the body will roll and slip first, then it will acquire pure rolling.. dhire dhire...
1see fig,
friction will produce an opposite torque..
that will reduce omega but increase linear speed (which is zero initially)
the tendency will be to have no sliping at point of contact.. i.e.v=wR
did u get it?
if not... then plz tell.... i will again try :) (to xplain :))