7. [0/1.48 Points] DETAILS PREVIOUS ANSWERS SERPSE10 16.3.OP.019. MY NOTES ASK YOUR TEACHER Each end of a cord with u = 4.50 g/m is attached to two opposite walls. The distance between the walls is the length of the cord. A block of mass m hangs from the middle of the cord. Neglect the mass of the cord in calculating the tension. (a) Find an expression for the transverse wave speed in the cord as a function of the mass of the block. (Use the following as necessary: m. Do not include units in your answer. Assume that m is measured in kg and v is measured in m/s.) V = 44.6v m First, draw a free-body diagram of the intersection of the three cords, and use Newton's second law to find an expression for T. You will need to use trigonometry to determine the unknown angle in your expression. Then use the relationship among v, 7, and / to find v in terms of m. (b) What is the mass of the block (in kg) if the wave speed is 49.0 m/s? 2 Need Help? Read It