A uniform metre scale of mass 2kg is suspended from one end. If it is displaced through an angle 60^(@) from the vetical, th increase in its potential energy is,

A uniform metre scale of mass 2kg is suspended from one end. If it is

1.	A uniform metre scale of mass 2kg is suspended from one end. If it is displaced through an angle 60^(@) from the vetical, th increase in its potential energy is,
Answer» 4.9 J 9.8 J `9.8sqrt(3)J` `4.9(2-sqrt(3))J` ANSWER :A