A uniform metre scale of mass 2kg is suspended from one end. If it is displaced through an angle 60^(@) from the vertical, the 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 vertical, the 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