The length of a spring is α when a force of 4 N is applied on it and the length is β when 5 N force is applied. Then the length of a spring when 9 N force is applied? The length of a spring is α when a force of 4 N is applied on it and the length is β when 5 N force is applied. Then the length of a spring when 9 N force is applied? November 8, 2020 Category: Chapter 11 - SHM , MTG NEET Physics , Part 1 , Facebook Messenger WhatsApp Share this:TwitterFacebook Related