the co efficient of friction of a plane inclined at 30 degree is 0.4 . Then the acceleration of the body sliding freely on it is?
friction up the plane=mg*.4*cos30
gravity down the plane=mg*sin30
net force=ma
mg(sin30-.4cos30)=ma
solve for a.
gravity down the plane=mg*sin30
net force=ma
mg(sin30-.4cos30)=ma
solve for a.