The primary function of the muscles surrounding the knee is to provide flexion and extension of the joint; it also has the capability
for slight rotation, but this is very minimal and normally not discussed in most text.
Not exact matches
Start with the left hand (
for right handers) Extend the arm out straight with a
slight rotation so your knuckles end up and palms are facing the ground.
As
for melting continental ice sheets, yes, that would increase the Earth's moment of inertia about its axis of
rotation, leading to a
slight increase in length of day.