Rotational position 3

Angular PositionJanuary 9, 2023 Now, if we know how fast this sphere is moving in the universe, or in other words translationally, we can figure out the exact dimensions of the moving object. This is how physicists figure the mass or size of something just by calculating the velocity of anything. to = Therefore, = r Let's look at the moment of Inertia for this object, or its internal resistance to rotational movement, I. l = mrl You can see that any sphere has 40% of its mass contributed against its angular acceleration, or [alpha]. Don't worry we won't introduce ct yet. Just know that the technical physics term for change in velocity, even if that velocity = 0 radians/second is not velocity, it is angular acceleration. Cause F=ma said mass in translation is resistant to acceleration. lo: Now, you have angular momentum, L. l. Directionality for angular momentum is either clockwise or counterclockwise. You can designate it to be consistent to translational momentum. lfthe ball is rolling East and you say east is positive, then say clockwise is {+). The model of the earth globe at the lab weighs 2 kg and its end to end diameter is 40 cm. You roll it to the space department next door through a conveyor belt that is still. If the model earth is moving 0.5 meters per second, what is the angular momentum of the globe