First slide

Work

Question

Two springs have their forces constant $K_{1} a n d K_{2}$ and they are stretched to the same extension. if $k_{2} > k_{1}$ work done is

Moderate

A

same in both the springs
B

more in spring $K_{1}$
C

more in spring $K_{2}$
D

none

Solution

$w o r k d o n e b y a s p r i n g = e n e r g y s t o r e d i n t h e s p r i n g = \frac{1}{2} k x^{2} w o r k α k i f x c h a n g e i n l e n g t h i s c o n s \tan t; w h e r e k i s f o r c e c o n s \tan t a n d$

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