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ppk ppk
wrote...
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Posts: 3560
12 years ago
A piano wire has a radius of 0.50 mm. One end is fixed and the other is wrapped around a tuning peg, which has a diameter of 3.5 mm and is 80 cm away. After the wire just becomes taut, the peg is given three full turns. What is the tension in the wire? Young's modulus for steel is
20 × 1010 N/m2.
A) 3.8 kN
B) 4.3 kN
C) 6.5 kN
D) 8.7 kN
E) 9.8 kN
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Answer accepted by topic starter
bio_manbio_man
wrote...
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Posts: 33321
12 years ago
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3 years ago
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