Question

A force that is needed to bring back the body to its original position is called as?

(a) Viscous force

(b) Elastic force

(c) Gravity force

(d) Pressure force

I got this question in an internship interview.

I would like to ask this question from Types of Forces Acting in Moving Fluid topic in chapter Dimensional and Model Analysis of Fluid Mechanics

Answer 1

Correct answer is (c) Gravity force

To elaborate: Elastic force is the force that brings a body back to its original position. It is defined as the product of elastic stress and the area of the flowing fluid.