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Two pulses in a stretched string whose c...

Two pulses in a stretched string whose centres are initially 8 cm apart are moving towards each other as shown in Fig. (15.13.3) . The

Speed of each pulse is 2 cm/s. After two seconds, the total energy of the pulses will be

A

zero

B

purely kinetic

C

purely potential

D

party kinetic and partly potential

Text Solution

Verified by Experts

The correct Answer is:
B
The string becomes straight after two seconds. And its potential energy will be zero. Hence the total energy of the pulse will be kinetic.
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