For years, former Pakistan pace bowler Wasim Akram has dumbfounded batsmen with his reverse swing. He was a great bearer of reverse swing bowling. Any fast bowler can swing the ball both ways, but reverse swinging the ball requires great skill and talent.
So, what is reverse swing bowling?
When the ball wears and becomes old, the ball starts swinging towards the shine. This is called reverse swing. It means a natural outswinger becomes an inswinger and vice versa. Reverse swing is stronger than normal swing and occurs late in the ball trajectory, making it difficult for batsmen to play.
This also leads to ball tampering
As reverse swing happens after the ball is fairly old, about 40 overs, some teams and players try to change the condition of the ball or tamper with it to aid reverse swing early in the innings. Recently, Steve Smith and David Warner were banned for plotting to tamper the ball in the tour of South Africa.
So, how can you achieve reverse swing using a physics formula?
Scientists at IIT Kanpur have found a physics formula to decode reverse swing. Professor Sanjay Mittal and his two students Ravi Shakya and Rahul Despande of the Institute’s Aerospace department came out with a formula to bowl reverse swing after conducting a lot of research on the different types of swing bowling.
They found that there is a direct relation with the speed of the ball and the angle of the seam of the ball to deliver a reverse swing.
So, what’s the formula?
The scientists team claimed that a natural swing can be achieved if the bowler delivers the ball by turning the seam 20 degrees downward with a speed of 119-125 kms/hr, depending on the roughness of the ball and pitch conditions.[ad id=”29091″]
So, utilising this knowledge of physics formula to produce maximum swing, a fast bowler with speeds of 79 to 140 kms/hour can get the ball to reverse swing.