Question about F1 anti roll bar

[firasf1dream]

hello guys,
i hope you all doing well,
my question is about the anti roll bar in recent f1, let's take the picture below as a reference, i would like to know does the bar actully is able to rotate i mean when it's free from any connection can it rotate around it's center line ? or is it fix but it will rotate just under load ?
[img]i96.photobucket.com/albums/l196/mac_987/ARB_zpsymhd1kmg.jpg[/img]

[gruntguru]

Yes.

[firasf1dream]

Yes.

Yes for free rotation ?

[gruntguru]

It is free to rotate.

[firasf1dream]

It is free to rotate.

ok and what makes it locked ? the reversed torque on both sides ?

[gruntguru]

Why would it be locked?

The tube acts as a torsional spring which resists unequal left-right wheel displacements.