A car of mass m moving over a concave bridge of radius r. Find the normal reaction acting on car when it is at the lowest point of the bridge. A car of mass m moving over a concave bridge of radius r. Find the normal reaction acting on car when it is at the lowest point of the bridge. August 30, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related