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Introduction Most solid materials expand upon heating and contract when cooled because it undergoes a change in the energy state of its molecules or atoms According to the atomic perspective the average vibrational amplitude of an atom increases as the temperature rises Each material has a property called coefficient of linear expansion that is indicative of the extent to which a material expands upon heating or contracts when cooling The coefficient of expansion is re very important to all structures and foundation of buildings to avoid the possibility of collapsing Objective The objective of this experiment is to calculate the coefficient of linear expansion of a metal The change in length of several materials such as glass brass copper stainless steel and aluminum will be determined and the corresponding coefficient of linear expansion would be calculated GROUP 5 Metal pyrexGlassBrassCopperSteelAluminum DataT127XC T295XC L106mT127XC T298XC L106mT127XC T298XC L106mT127XC T298XC L106mT127XC T298XC L106m tsL001mmT XC L001mmT XC L001mmT XC L001mmTXC L001mmT XC 10527102752730401927 209302030152740493327 3011453035282752685330 4014594558413864807155 5015635577536271859072 60156968836678738810481 70157883887684749010686 80158186907988749110788 90168387917990749210790 100168487937991749310891 110168687937992749410893 12016888793799374 9510893 130168987937994749510994 140169087937994749510994 150169087937995749510995 160169187937995749510995 170169187937995749510995 180169187947996749610996 190169287947996749610996 200169287947996749610996 210169287947996749610996 220169387947996749710997 230169387947997749710997 240159387947997749710997 250159388957997749710997 260159488957997749710997 270159488957997749810997 280159488957998749810998 290159488957998749810998 300159588987998749810998 GROUP 5 Results The results were calculated by the following equation 1 L L1 T2 V T1 whereL the change in length L1 the original length T2 the final temperature T1 the initial temperature the coefficient of linear expansion of the material The following equation 2 was changed by equation 1 which was used to calculate the L L1 T2 V T1 The coefficient of linear expansion of five metals were calculated by equation 2 The accepted value of five metals in the text book pg 646 was shown in the following Metal XC-1
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