Determine the rotational inertia of the construction about an axis perpendicular to the picture and passing through point b.

m* 8.0 kg*m²

Explanation:

Rotational inertia of a set of discrete masses (considered point masses), regarding an axis passing through a given point, is just the sum of the products of each mass times the distance to the point of interest.

In the attached picture, neglecting the masses of the rods joining the masses, and taking into account that all masses are equal each other, being  equal to m kg, we can write the following equation:

I = m₁*r₁² + m₂*r₂² + m₃*r₃² + m₄*r₄²,  

⇒ I = m kg*0 +m kg*2 m² +m kg*2m² + mkg*4m²

⇒ I = m*8 kg*m²

gravititional force is a force that is acting around you, it is non-contactable and it is a force that pulls you to the core of the earth.

brainliest

cell differentiation  is how generic embryonic  cells  become specialized  cells. this occurs  through a process called gene expression. gene expression is the specific combination of genes that are turned on or off (expressed or repressed), and this is what dictates how a  cell  functions.

explanation: