Physics

A person tries to balance a wooden plank by placing stones . The plank has negligible mass and is pivoted at its center.

Question1)Calculate the moment caused by the 4 newtons force about O.

Question 2) Calculate the moment caused by the 6 newtons force about O

Question 3) Will the plank balance if not which way it will tip.(Give reason)

Question 4) What extra force is needed at point P to balance the plank?

Question 5) In which direction must this force act?

and I am again stuck with posting a picture