Spinning a ball in cricket. What makes the ball spin?
The bowler’s hand. Depending on the bowler they can either do it with finger motion or wrist motion. Either way, they put a bunch of spin on the ball during release.
Most normal (overhand) throwing motions will put backspin on the ball. A cricket bowler tweaks that to spin the ball at an angle to it’s flight, so when it bounces it will abruptly change direction. You also get something called “Magnus effect” when a spinning ball goes throuh the air that acts kind of like an airplane wing and can also curve the path in flight.
The bowler literally spins the ball with his fingers; I’m not sure I understand the question