Answer Happy

A cord of mass m and length L is hanging vertically. A pulse travels from the lower end to the upper end of the cord in an approximate time interval At = 21 with a speed that varies with position x measured from the bottom of the cord as v= gx. Assume the linear wave equation describes waves at all locations on the cord. (a) Over what time interval does a pulse travel five sixths of the way up the cord? Give your answer as a fraction of the quantity At = 21 2V a At = x2v (b) A pulse starts traveling up the cord. How far has it traveled after a time interval (Use the following as necessary: L.) x=