(a) Based on the student observation, is the tension in string A greater than, l
ID: 1290387 • Letter: #
Question
(a) Based on the student observation, is the tension in string A greater than, less than or equal to the tension in string B?
(b) Based on the student observation, is the mass per unit length of string A greater than, less than or equal to the mass per unit length of string B?
I said that the speed with which this pulse moves (or propagates) only depends on the properties of the medium itself and does not depend on the properties of the pulse. This idea was expressed by writing that the pulse or wave speed, v = (T/u)^(1/2), where T = tension in the string and ¼ is the mass-per-unit length of the string.Use this idea together with your notes to answer the following: A student performs an experiment with two strings A and B attached end-to-end at point J as shown in the figure below. This combined string is attached to a rigid wall on one side. The other side is attached to a hanging mass that provides some tension (see figure below). The student then creates one transverse pulse close to the left end of string A by moving a small portion of the string up and then down. The pulse moves to the right in string A, crosses the junction J and continues to move to the right in string B. The student observes that the pulse travels more quickly in string A than in string B. (a) Based on the student observation, is the tension in string A greater than, less than or equal to the tension in string B? (b) Based on the student observation, is the mass per unit length of string A greater than, less than or equal to the mass per unit length of string B?Explanation / Answer
a) tension in string A equal to the tension in string B
b) mass per unit length of string A greater than the mass per unit length of string B
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