Question

A steel tape was exactly 30m long at 18℃ when supported throughout its length under a Pull
of 8 Kg. A line was measured with a tape under Pull of 12Kg and found to be 1602m. The
mean temparauireduringmeasurementwas26℃.Assumingthetapetobesupportedatevery
30m ,CalculatetheTrueLengthoftheLine.Giventhat,Crosssectionalareaofthetapeis
0.04m2.theweightof1cm3is0.0077Kg,thecoefficientofthermalexpansionis0.000012
per1℃ ,andmodulusofelasticityis2.1X106Kg/Cm2.

Answer 1

Answer:of 8 Kg. A line was measured with a tape under Pull of 12Kg and found to be 1602m. The

mean temparauireduringmeasurementwas26℃.Assumingthetapetobesupportedatevery

30m ,CalculatetheTrueLengthoftheLine.Giventhat,Crosssectionalareaofthetapeis

0.04m2.theweightof1cm3is0.0077Kg,thecoefficientofthermalexpansionis0.000012

per1℃ ,andmodulusofelasticityis2.1X106Kg/Cm2.

Explanation:

Answer 2

Explanation:

A steel exactly 30m long at 18oC when supported throughout its length

under a pull of 8kg. A line was measured with a tape under a pull of 12kg

and found to be 1602m. The mean temperature during the measurement was

26oC. Assuming the tape to be supported at every 30m, calculate the length

of the line, given that cross sectional area of the tape is 0.04 sq.cm. The

weight of 1cc = 0.0077kg. The co-efficient of expansion=0.000012 per 1oC,

and the modulus of elastic =2.1X103kg/sq.cm.