Entry Test MCQ :: Physics Of Solids

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A wire suspended vertically from one end is stretched by attaching a weight of 20N to the lower end. The weight stretches the wire by 1mm. How much energy is gained by the wire?

[A].	0.01J	[B].	0.02J
[C].	0.04J	[D].	1.0J

Answer: Option A

RABIA said:

plz give mathamatical explanation???????????????

iQra muShtaQ said:

by using formula P.E=mgh by taking g=9.8 nd convert mm into metr..

RABIA said:

thanks iqra

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