First slide

Elastic Modulie

Question

A long string is stretched by 2 cm and the potential energy V. If the spring is stretched by 10 cm, its potential energy will be

Moderate

A

V/25
B

V /5
C

5 V
D

25 V

Solution

$V = \frac{1}{2} k (x)^{2} = \frac{1}{2} k (2)^{2}$
or $k = \frac{2 V}{4} = \frac{V}{2}$
$V^{'} = \frac{1}{2} k (10)^{2} = \frac{1}{2} \times (\frac{V}{2}) (10)^{2} = 25 V$

Get Instant Solutions

When in doubt download our app. Now available Google Play Store- Doubts App

Recieve an sms with download link

Doubts App

OR

SCAN ME

Doubts App

Doubts App