Complex sentence: Because wooden baseball bats are solid, the majority of the weight is in the barrel of the bat, meaning that the center of gravity has to be further away from the handle causing the bat to feel heavier near the end.
Split into simpler sentences: Because wooden baseball bats are solid, the majority of the weight is in the barrel of the bat. This means that the center of gravity has to be further away from the hands causing the bat to feel heavier near the end.