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Menampilkan postingan dari September, 2013

Soal dan Pembahasan Elastisitas (Fisika Kelas XI)

Elasticity 1.       A spring when pulled by a force of 20 N increased length of 6 m. What is the potential energy? A.     1,2 x 10 2 N/m B.      2,33 x 10 2 N/m C.      3,33 × 10 2  N/m D.     4,2 x 10 2 N/m E.      5,22 x 10 2 N/m 2.       A bar of steel which is 4 mm 2 in cross-sectional area and 4 cm in length is pulled by a force of 100 N. If the modulus of elasticity of steel is 2 x 10 11 N/m 2 , so the stress and strain of the steel is. . . A.     1,25 x 10 4 N/m 2 and 2,5 x 10 7 B.      1,25 x 10 -4 N/m 2 and 2,5 x 10 5 C.      2,5 x 10 5 N/m 2 and 1,25 x 10 4 D.     2,5 x 10 6 N/m 2 and 1,25 x 10 -4 E.      2,5 x 10 7 N/m 2 and 1,25 x 10 -4 3.       A cylinder made of steel...