A smooth block of mass m is connected with a spring of stiffness k (= 20N/m) and natural length l0 = 0.25 m. If the block is pulled such that the new length of the spring becomes l = 0.3 A smooth block of mass m is connected with a spring of stiffness k (= 20N/m) and natural length l0 = 0.25 m. If the block is pulled such that the new length of the spring becomes l = 0.3 September 29, 2020 Category: Uncategorised (JEE Advanced Physics by BM Sharma + GMP Solutions) , Facebook Messenger WhatsApp Share this:TwitterFacebook Related