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If unit of mass is taken as 1 kg, of time as I minute and that acceleration due to gravity istaken as 9.81 ms^(-2) , what is the unit of energy ? |
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Answer» Solution :NEW unit of energy =`E_(1)` , New unit of mass `M_(1) = 1kg ` New unit of time `T_(1)=1` minute = 60 sec New unit of length `=L_(1)` `E_(1) [ M_(1)L_(1)T_(1)^(-2)]` New unit of acceleration due gravity , `g_(1)= 9.81 ms^(-2)` `g_(1)=L_(1)T_(1)^(-2)L_(1)=g_(1)T_(1)^(-2)=9.81xx(60)^(2)` meter `E_(1)=|1kg xx(9.81xx60^(2))^(2)m^(2)(60)^(-2)S^(-2)|` `E_(1)=(1xx9.81xx60xx60xx9.81xx60xx60)/(60xx60) kgm^(2)s^(-2)` `E_(1) = 3.464 xx10^(5) kg m^(2) sec^(-2)` `:.` The new unit of energy `E_(1)= 3.464xx10^(5)` JOULE . |
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