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Sepotong kawat yang panjangnya 3 m dengan luas penampang1 mm2, massanya 24 gr. Bila kawat diberi beban 10 Newton, maka kawat bertambah panjang 0,15 mm tentukan modulus elastisnya

Pertanyaan

Sepotong kawat yang panjangnya 3 m dengan luas penampang1 space mm squared, massanya 24 gr. Bila kawat diberi beban 10 Newton, maka kawat bertambah panjang 0,15 mm tentukan modulus elastisnya space 

R. Manzilah

Master Teacher

Mahasiswa/Alumni UIN Syarif Hidayatullah

Jawaban terverifikasi

Pembahasan

diketahui colon straight l equals 3 space straight m straight A equals 1 space mm squared equals 1 cross times 10 to the power of negative 6 end exponent space straight m squared straight m equals 24 space gr equals 24 cross times 10 to the power of negative 3 end exponent space kg straight F equals 10 space straight N increment straight l equals 0 comma 155 space mm equals 0 comma 155 cross times 10 to the power of negative 3 end exponent space straight m  ditanya colon space straight E ?  jawab colon straight sigma equals straight F over straight A equals fraction numerator 10 over denominator 1 cross times 10 to the power of negative 6 end exponent end fraction equals 10 to the power of 7 space straight N divided by straight m squared straight e equals fraction numerator increment straight l over denominator straight l end fraction equals fraction numerator 0 comma 155 cross times 10 to the power of negative 3 end exponent over denominator 3 end fraction equals 0 comma 05 cross times 10 to the power of negative 3 end exponent straight E equals straight sigma over straight e equals fraction numerator 10 to the power of 7 over denominator 0 comma 05 cross times 10 to the power of negative 3 end exponent end fraction equals 2 cross times 10 to the power of 11 space straight N divided by straight m squared 

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