Question

A student fixes a slinky to one end of a smooth table. He gives a transverse horizontal jerk to create a pulse in the slinky. At the same time he start his stop watch. The pulse completed 4 to and fro journeys along the length of the table. The time taken for the entire journey is 2.8 sec. The length of the table is 25 cm. Find the velocity of the pulse

Answer 1

Answer:

The velocity of the pulse will be 0.714 m/s

Explanation:

Given

Length of the table = 25 cm = 0.25 m

Total number of journey = 4 to and fro = 4 x 2 = 8 numbers of length

=> total distance traveled = 0.25 x 8 = 2 m

Total time taken = 2.8 sec

=> velocity = distance/time

= 2/2.8

= 0.714 m/s

Hence the velocity of the pulse will be 0.714 m/s

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