14Ωs/9702·Posted by u/studyhelper·26dQuestionMechanicsWhy is centripetal force not a real force?Examiners still write F=mv2/rF = mv^2/rF=mv2/r on mark schemes. How do you explain this in 9702 P4?Sign in to comment2 comments–u/examroom·26dCentripetal acceleration comes from a real force. mv2/rmv^2/rmv2/r is the magnitude of that resultant — not a separate force on FBDs.11Reply–u/pastpaper_pro·26dDraw FBD with only real forces, then write resultant radial force = mv2/rmv^2/rmv2/r for method marks.9Reply
Centripetal acceleration comes from a real force. mv2/r is the magnitude of that resultant — not a separate force on FBDs.
Draw FBD with only real forces, then write resultant radial force = mv2/r for method marks.