Twp pulses in a stretched string whose centers are initially 8 cm aprt moving towards each other as shown in fig. The speed of each pulse is 2 cm /s. After 2 seconds, the total energy of the pulses will be :

Twp pulses in a stretched string whose centers are initially 8 cm aprt

1.	Twp pulses in a stretched string whose centers are initially 8 cm aprt moving towards each other as shown in fig. The speed of each pulse is 2 cm /s. After 2 seconds, the total energy of the pulses will be :
Answer» zero purely potential purely kinetic partly kinetic x partly potenial . SOLUTION :DISTANCE covered by each pulse = 2`XX 2 `= 4 cm . Thus after 2 seconds the two pulses overlap each other. Correct choice is (C).

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Twp pulses in a stretched string whose centers are initially 8 cm aprt moving towards each other as shown in fig. The speed of each pulse is 2 cm /s. After 2 seconds, the total energy of the pulses will be :

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