Using the solution from the previous problem, find the increase in rotational kinetic energy, given the core’s mass is 1.3 times that of our Sun. Where does this increase in kinetic energy come from?

Ch.5:ForceandMo▯on-I A. ChapterGoals st nd rd • StudyofwhatareNewton’s1 ,2 ,and3 lawsofmo▯on • Studyofwhataretheforce,netforce,mass,andweight • StudyofhowtoapplyNewton’slawstosolvephysical problems Ch.5:ForceandMo▯on-I B.Newton’sFirstLawofMo▯on • Ifnotforceactson,anobjectcannotchangevelocityor cannotaccelerate. • Inotherwords,arestbodykeepsrestandamovingbody keepsthemo▯onwiththesamevelocity Ch.5:ForceandMo▯on-I C.Force • Anyinﬂuenceorac▯ononanobjectthatcausestheobject tochangevelocity.Forinstances:push,pull,etc. • Itisavector F withunit:Newton(N) Ch.5:ForceandMo▯on-I • FourFundamentalInterac▯onsofNature 1. Gravita▯onalforces 2. Electromagne▯cforce 3. Weakforce 4. Strongforce Ch.5:ForceandMo▯on-I Ch.5:ForceandMo▯on-I • NetForce: Netforceistheunbalancedforce,canbeobtainedby combiningallforces F F4 F = F1+F +2 +.3.... 1 ▯ F 2 F3 Ch.5:ForceandMo▯on-I • Iner▯alReferenceFrame: Aframe,inwhichanobjectdoesnotaccelerateifnonet forceactsonit. Orinotherwords:ItisaframeinwhichNewton’slawshold