First slide

Potential energy

Question

When a spring is compressed by 3cm, the potential energy stored in it is U. When it is compressed further by 3cm, the increase in potential energy is,

Moderate

A

4 U
B

U
C

2 U
D

3 U

Solution

$\large {U_1} = \frac{1}{2}k{x^2},\vartriangle U = \frac{1}{2}k(x_2^2 - x_1^2)$
$\large {u_1} = \frac{1}{2}k(9)$
$\large \vartriangle U = \frac{1}{2}k(27);{U_2} = 3U$

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