If a child were to claim their parent spanked them with a belt and was bruised, but had no evidence of the bruises, how would the court/police proceed?

The court or police would investigate the claim and interview the child, parent, and any other witnesses. They would also look for any other evidence that could corroborate the claim, such as medical records or photographs. Depending on the severity of the alleged abuse, the court or police may also order a medical examination of the child to determine if there are any signs of physical abuse. If the court or police find sufficient evidence to support the claim, they may take legal action against the parent.