Question
A block of mass 10 kg is released on rough incline plane. Block start decending with acceleration 2 m/s² . Kinetic friction force acting on block is ( take g= 10m/s² )
1. 10N 2. 30N
Joshi sir comment
question is not correct
Read 1 Solution.
As the value of µ or tanθ is not given in the ques thus it can be solved BY SHORTCUT ie d body is moving downward means ma is gr8er than frictional force becoz if frictn will be more than body did not move downward . ma=2X10 =20 so out of 2 given optn (1)opt will be the ans as it is lesser than 20N
SARIKA SHARMA 11 year ago
is this solution helpfull: 2 3