RESPECTED SIR,
I WANTED TO KNOW THAT whether direction of normal reaction is normal to the body on which it acts or is it normal to the surface on which body is kept?........what will be the direction of normal force(by the wall) on a rod leaning against a wall,with some portion of ladder protuding out.........please help me
the direction of normal force is always perpendicular to 'surfaces in contact '
at the point of contact of the bodies ....draw a tangent to the surfaces and draw a line perp to the tgt.......at the point of contact of the bodies ...tht will be the direcn of the normal reaction of one body on the other....they are equal and opposite