Question

Question:When an object is immersed in a liquid at rest, why is the net force on the object in the horizontal direction equal to zero?

Short answer

The net force along the horizontal equal to zero because, pressure is same on points that are at the same level but on opposite sides

Step-by-step solution

Newton’s third Law

Based on Newton’s third law, the pressure is the same on points that are at the same level but on opposite sides.

Find why the net force on the object in the horizontal direction is equal to zero

Whenanobjectisimmersedinafluidatrestthefluidexertsaforceonitssurfacewhichalwaysnormaltotheobjectsurface.

Based on Newton’s third law we know that pressure is the same on points that are at the same level but on opposite sides and hence cancelled each other so; net force along the horizontal is equal to zero.