The rotation of the Earth having radius R about its axis speeds up to a value such that a man at latitude angle 60 degree feels weightlessness. The duration of the day in such a case is. The rotation of the Earth having radius R about its axis speeds up to a value such that a man at latitude angle 60 degree feels weightlessness. The duration of the day in such a case is. September 18, 2020 Category: Arihant Physics by D.C Pandey , Chapter 10 - Gravitation , Volume 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related