A bucket full  of water  is rapidly  rotated    in a  vertical  circle  of radius  r .
Channel: Doubtnut
Date: 2020-05-24

A bucket full  of water  is rapidly  rotated    in a  vertical  circle  of radius  r . It  of is  found  that  the  water  does  not fall  down  from  the bucket  , even  when  the bucket  is inverted  at the  highest  point  . If it  continues  with  this  speed  , then  the   normal  contact  force  exerted  by  the  bucket  on the  water  at the  lowest  point  in its  path  is