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  4. In the given figure, the container slides down with acceleration 'a' on an incline of angle ' θ '. Liquid is stationary with respect to container. Find out angle made by surface of liquid with horizontal plane, if a=g sin θ.

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Q. In the given figure, the container slides down with acceleration 'a' on an incline of angle ' $\theta$ '. Liquid is stationary with respect to container. Find out angle made by surface of liquid with horizontal plane, if $a=g \sin \theta$.Physics Question Image

Mechanical Properties of Fluids

Solution:

Consider a fluid particle on surface. The forces acting on it are shown in figure.
image
Liquid surface will always be perpendicular to effective gravity here the effective gravity is perpendicular to the inclined plane.