Yes really! Physics plays a huge part in why a ball curves the way it does and whereabouts on the bat is the best place to hit it. It is all to do with something called the ‘sweet spot’ otherwise known as the Centre of Percussion. When a ball hits a wood bat away from the sweet spot the resulting bat vibrations consume energy that should have gone to the ball, and the ball does not go as far as when hit at the sweet spot. So there you have it! If you don’t hit the ball at the sweet spot then you experience the kind of juddering vibrations best seen on cartoons when a large metal object is mistakenly hit with a hammer. Usually with an accompanying dddooiiinnng! If you want to know more then read this account of baseball bats
http://www.kettering.edu/~drussell/bats-new/crack-ping.html
It also tells you why a wooden bat will ‘crack’ whilst an aluminium bat will ‘ping’!
A cricket bat is designed to hit a ball in its lower middle section, between 10 to 30 cms (4 to 12 inches) from the bottom. In addition it is recommended that cricket bats be ‘knocked in’ to harden and knit the fibrous textures of the face of the bat before being exposed to a new cricket ball being bowled at 90 mph. And you thought that scientists spoke a different language? ‘Knocked in?’ ‘Sweet spot’? Not to mention ‘Googly’. What is that all about eh? For a fuller explanation of cricket terms click on:
http://www.icc-cricket.com/db/ABOUT_CRICKET/
EXPLANATION/CRICKET_TERMS.html>
That’s enough about the batting. What about the bowling? Well have you heard of reverse swing? No it’s not a dance move. Australia are studying the art of reverse swing in order to combat England's bowlers during the Ashes. But what is it? Well when the ball is 50 overs old and the pitch is as flat as a pancake, this phenomenon is often a bowling side's saving grace. First mastered by the Pakistani bowlers of the 1980s and 1990s, it involves sideways movement of the ball through the air that is contrary to your average everyday laws of physics. If it sounds like rocket science, that’s because it is! To get reverse swing with a new ball, smooth on both sides, experiments show that the bowler has to reach 80-90 mph to get appreciable movement. Find out more:
http://www.soest.hawaii.edu/GG/STUDENTS/jfoster/swing.html
Congratulations to England’s Andrew Flintoff, he regularly tops the 90mph mark that sees a bowler designated truly fast. In the process he has helped expose a massive weakness in the Aussie side - their inability against short, fast bowling. What a hero! Talking of which…
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