A thin uniform 15 kg post, 1.75 m long is held vertically using a cable and is attached to a 5kg mass and a pivot at its bottom end. The string attached to the 5kg mass passes over a massless, frictionless pulley and pulls perpendicular to the post. suddenly cable breaks.
a) Find the angular acceleration of the post about the pivot just after the cable breaks.
b) will the angular acceleration in part a remains same as the post falls.(before it hits the pulley)? why?
c). what is the acceleration of the 5kg mass the instant after the cable breaks? please show steps