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When a mass of m= 30 kg is hung from the middle of a fixed straight aluminum wire, the wire sags to make an angle of 12° with the horizontal as shown in (Figure 1). The elastic modulus for aluminum is 7.0 x 10¹0 N/m². Figure • Previous 112 m 121 1 of 1 Part A Determine the radius of the wire. Express your answer to two significant figures and include the appropriate units. Value Submit HÅ Provide Feedback Request Answer Units ?
A nylon string on a tennis racket is under a tension of 225 N. Part A If its diameter is 1.05 mm, by how much is it lengthened from its untensioned length of 31.0 cm ? Use: ENylon5.00 x 10° N/m². ΟΤΙ ΑΣΦ AL=0.018 Submit Previous Answers Request Answer X Incorrect; Try Again; 4 attempts remaining Const m