Which of the following statements can be concluded (deducted) from the parallel-axis theorem? the area moment of inertia of an area about a noncentroidal axis is always less than that about a centroidal axis the area moment of inertia of an area about a noncentroidal axis is always greater than that about a centroidal axis the area moment of inertia of an area about a noncentroidal axis can be equal to that about a centroidal axis there is no relationship between the area moment of inertia of an area about a noncentroidal axis and that about a centroidal axis o none of the above

The statement that we can conclude is that the moment of inertial of any body about the centroidal axis is least of all the moment of inertia's of the body about any arbitrary axis in the body.

Explanation:

According to parallel axis theorem we have

Where

is the moment of inertia about any arbitrary axis.

is the moment of inertia about centroidal axis.

A is the area of section of which Moment of area is evaluated

'x' = is the distance between the axis and C.G

thus we conclude that is least of all the moments.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.

one person pulls 90n one way and the other has 100n pulling the other way.

so the net force = 90 - 100 = -10n,

or the ans can be 10n if the picture shows -90n and 100n instead.