One end of a long taut tiring it tied to a distant pole and the other end of the

Question

One end of a long taut tiring it tied to a distant pole and the other end of the string is held by a student (see figure below). The student quickly flicks her hand up and down to create a pulse moving toward the pole. a. She now wants to produce a pulse on the same string that takes less time to reach the pole, keeping her hand motion the same as in the initial experiment. How can she do this? Why does this change mean the pulse takes less time to reach the pole? In other words, why does your answer make sense to you? (Please write what you really think; this question will be graded for a thorough answer rather than correctness.) a. She still wants the pulse to reach the pole in less time by making a change to the string. How can she do this? Why does this change mean the pulse takes less time to reach the pole? In other words, why does your answer make sense to you? (Please write what you really think; this question will be graded for a thorough answer rather than correctness.)

Explanation / Answer

5

a)

the speed of pulse depends directly on the tension in the string. If the strings is pulled harder , the tension force will increase and hence the speed of pulse will also increase too. and then it would take less time

6 a)

we also make the time smaller by increasing the speed of pulse by making changes to the string. the speed of pulse depends inversly on the mass per unit length of the string. if we decrease the mass per unit length , the speed would increase and it would take less time for the pulse

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