3torque due to gravity.
6 Answers
39http://en.wikipedia.org/wiki/Leaning_Tower_of_Pisa
that should be helping u
or
http://www.google.co.in/search?hl=en&q=http%3A%2F%2Fen.wikipedia.org%2Fwiki%2FLeaning_Tower_of_Pisa&btnG=Google+Search&meta=&aq=f&oq=
11hey aritra is msp's pinked post the right ans.. i thought riddle has no connection wid phys.
1hey there is intresting fact that the foundation of leaning tower of pisa was made in different times thats also a reason
1i heard it was attacked and was going to be taken down during sum war...but at the last moment it was stooped from destruction.....then enginers removed some soil from under it n declaredit safe for 300 years.....