In case of solids, the force can be applied in any direction with respect to the surface. However, in
case of fluids

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.

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  1. Answer:

    BUT IN CASE OF FLUIDS(LIQUID/GASES),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.

    Explanation:

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