what is the law of having a child thats parents are devorced and not letting the other parent see the child

If you are divorced and there are court orders as to placement, you are obligated to follow those court orders or you may be found in contempt. The only way you can withhold placement is if you have an honest and sincere belief that your child would be physically or emotionally endangered by the visitation; you better have a rock solid case, because more likely than not, they are going to serve you with a motion to find you in contempt for violating the court orders and thwarting their placement.