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Juanita studies several free-body diagrams in which a normal force is shown. What is always true about a normal force in a free-body diagram?
a.It is opposite the weight.
b.It is perpendicular to a surface.
c.It is opposite the net force.
d.It is parallel to a surface.

Respuesta :

normal force is a special term for a free-body diagrams n it means the force is "normal" / perpendicular to a surface.

so ans is b.

nutanraj654

So the answer is b

It is perpendicular to a surface.

How is body force calculated?

'Volume' or 'body' forces: Let F be the body force per unit mass. (Example: F = g where g = gravitational 'acceleration'.) Then the force per unit volume is ρF, and the force on volume δV is ρFδV.

What is body force in fluid mechanics?

The strength of such forces varies very slowly and acts uniformly on all parts of a fluid parcel. Therefore, the total force is proportional to the volume of fluid. We define f to be the ”body force” acting on a unit volume, then the ”body force” on a given mass ρdV is ρ fdV . A typical body force is a gravity.

Learn more about  body force at

https://brainly.com/question/14626208

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