Why stress Cannot be explained in scalar or vector quantities?

The restoring force per unit area is called stress. Stress has both magnitude and direction but it does not follow the vector law of addition thus, it is not a vector quantity. Instead, stress follows the coordinate transformation law of addition, and hence, stress is considered as a tensor quantity.

Why is pressure a scalar quantity even though pressure is force divided by area and force is a vector quantity?

Hydrostatic pressure is a scalar quantity even though pressure is force divided by area. When a force is applied at any point, hydrostatic pressure is transmitted equally in all directions and not just in a particular direction. This the reason pressure is a scalar quantity even though force is a vector.

Why stress is vector and pressure is scalar?

A vector is a quantity that has a magnitude and a specific direction, e.g. force. Pressure is defined as the ratio of the force acting normal to a surface to the area of the surface on which the force is acting. Therefore, pressure does not have any specific direction. Hence, it is a scalar quantity.

Why moment of force is vector and work is scalar?

Both force and displacement are vector quantities. That means force and displacement have both magnitude and direction. Therefore, work is a scalar quantity.

Why stress is a scalar quantity?

It is a scalar because it is “total force” (magnitude) over a surface whose orientation has already been described. That’s why pressure is a scalar, and so are the other stresses.

Is normal stress a scalar or vector?

therefore, stress is not a vector quantity but is a scalar quantity.

Is hydrostatic pressure a vector quantity?

Hydrostatic pressure is a vector quantity.

Is force a scalar quantity or vector quantity?

Force is always a vector quantity, since the direction of the force matters in defining the parameter. “Four Newtons to the right” is quantifiably different from “four Newtons downward” or “four Newtons to the left.”

Why work done by a force can be positive or negative although it is a scalar quantity?

Work can be either positive or negative: if the force has a component in the same direction as the displacement of the object, the force is doing positive work. If the force has a component in the direction opposite to the displacement, the force does negative work. In other words, work done…

Why is current a scalar quantity?

Why electric current is a scalar quantity? In the case of electric current, when two currents meet at a junction, the resultant current of these will be an algebraic sum and not the vector sum. Therefore, an electric current is a scalar quantity although it possesses magnitude and direction.