The smaller human is easily intimidated. The smaller human also keeps tasty cosmetics in its pack. There are only a few basic maneuvers. Go for the sausage and cheese first. At night, reach up and grab a food bag if you can.
Most humans tie the cord or the bag within easy reach.
If the humans did a good job of hanging the food bag, it will be necessary to send the cubs up the tree trunk after the white cord. Early season training of the cubs can be done in Little Yosemite Valley. It is necessary to at least puncture and probe every food package for a taste. If it doesn't taste good, at least ruin it for the humans. If captured, give them only your name, rank, and bear serial number.