Solved papers for JEE Main & Advanced AIEEE Solved Paper-2012

done AIEEE Solved Paper-2012 Total Questions - 1

• question_answer1) A wooden wheel of radius R is made of two semicircular parts (see figure). The two parts are held together by a ring made of a metal strip of cross sectional area S and length L. L is slightly less than \[2\pi R\]. To fit the ring on the wheel, it is heated so that its temperature rises by \[\Delta T\] and it just steps over the wheel. As it cools down to surrounding temperature, it presses the semicircular parts together. If the coefficient of linear expansion of the metal is \[\alpha \], and its Young's modulus is Y, the force that one part of the wheel applies on the other part is:   AIEEE  Solved  Paper-2012
  A)
  \[2\pi SY\alpha \Delta T\]                               
  done clear
  B)
  \[SY\alpha \,\Delta T\]
  done clear
  C)
  \[\pi SY\alpha \,\Delta T\]                              
  done clear
  D)
  \[2SY\alpha \,\Delta T\]
  done clear
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