A wire suspended vertically from one of its ends is streched by attaching a weight of 200N to the lower end. The weight streches the wire by 1mm. The elastic energy stored in the wire is :

(A) 0.2 J

(B) 10 J

(C) 20J

(D) 0.1J

Question

A wire suspended vertically from one of its ends is streched by
attaching a weight of 200N to the lower end The weight streches the
wire by 1mm The elastic energy stored in the wire is :
(A) 0 2 J
(B) 10 J
(C) 20J
(D) 0 1J

nitish.gupta · Accepted Answer

Using the simple relation for a stretched wire potential energy
, U = (1/2) F Î”L, we can get the answer as follows
<img alt="" src=
"https://s3mn%20mnimgs%20com/img/shared/discuss_editlive/3760494/2012_10_22_17_43_16/xcz%20png">

A wire suspended vertically from one of its ends is streched by attaching a weight of 200N to the lower end. The weight streches the wire by 1mm. The elastic energy stored in the wire is : (A) 0.2 J (B) 10 J (C) 20J (D) 0.1J

A wire suspended vertically from one of its ends is streched by attaching a weight of 200N to the lower end. The weight streches the wire by 1mm. The elastic energy stored in the wire is :

(A) 0.2 J

(B) 10 J

(C) 20J

(D) 0.1J