A man of mass m starts moving w.r.t. a platform of mass 2 m with a velocity mu = 9/13 m/s as shown in figure. The platform is fitted with concave mirror of focal length f. The velocity A man of mass m starts moving w.r.t. a platform of mass 2 m with a velocity mu = 9/13 m/s as shown in figure. The platform is fitted with concave mirror of focal length f. The velocity October 7, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related