Question

In case of solids, the force can be applied in any direction with respect to the surface. However, in
case of fluids (liquid/gases) at rest
, the force must be applied at right angles to the liquid surface.
This is because fluids, at rest, cannot sustain a tangential force. We, therefore, usually speak in terms
of pressure in their case.

Answer 1

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Explanation:

Answer 2

Answer:

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Explanation:

Solids are rigid and have specific shapes and definite volumes. The atoms or molecules in a solid are in close proximity to each other, and there is a significant force between these molecules. Solids will take a form determined by the nature of these forces between the molecules. Although true solids are not incompressible, it nevertheless requires a large force to change the shape of a solid. In some cases, the force between molecules can cause the molecules to organize into a lattice as shown in (Figure). The structure of this three-dimensional lattice is represented as molecules connected by rigid bonds (modeled as stiff springs), which allow limited freedom for movement. Even a large force produces only small displacements in the atoms or molecules of the lattice, and the solid maintains its shape. Solids also resist shearing forces.