1. The problem statement, all variables and given/known data Respected Physics Gurus/experts...! I am confused in the application of Kinetic energy Expression, i.e, KE = (1/2)MVCM2+(1/2)ICMω2 I had been trying out this question actually(it's pretty simple though).....--- "A rigid body is made of three identical thin rods each of length L fastened together in the form of letter H. The body is free to rotate about a fixed horizontal axis AB that passes through one of the legs of the 'H'. The body allowed to fall from rest in a position in which the plane of H is horizontal. What is the angular speed of the body, when the plane of H is vertical? https://physicsforums-bernhardtmediall.netdna-ssl.com/data/attachments/80/80350-15ec1ccefce05dd0a160c18183367070.jpg [Broken] 2. Relevant equations KE = (1/2)MVCM2+(1/2)ICMω2 & Work Energy Theorem 3. The attempt at a solution I tried by considering the whole H at it's centre of mass and the applied the formulae but the answer I got was incorrect. My friend told me that since the 'H' is only rotating, the (1/2)MVCM2 term could be neglected...Why is it so? The CM has some velocity afterwards... Although the correct answer can be obtained by following this approach Any help would be appreciated..!