A plank of length 2m and mass 8kg is at rest on a table. The halfway point of the plank isn't 15cm from the edge of the table. A 5kg cat starts to...

A plank of length 2m and mass 8kg is at rest on a table. The halfway point of the plank isn't 15cm from the edge of the table. A 5kg cat starts to walk down the plank.

extended body diagram for the plank, analysis of the net torque of the system, determination of the cats location when the plank tips.

Q: if plank rotates where will the pivot point be located

Q: at what location for the cat will the plank begin to rotate