Accession Number:

ADA633403

Title:

What Is the Buoyant Force on a Block at the Bottom of a Beaker of Water?

Descriptive Note:

Corporate Author:

NAVAL ACADEMY ANNAPOLIS MD

Personal Author(s):

Report Date:

2006-01-01

Pagination or Media Count:

5.0

Abstract:

I propose that buoyant force be generally defined as the negative of the total weight of the fluids that are displaced, rather than as the net force exerted by fluid pressures on the surface of an object. In the case of a body fully surrounded by fluids, these two definitions are equivalent. However, if the object makes contact with a solid surface such as the bottom of a beaker of liquid, only the first, volumetric definition is well defined while the second definition ambiguously depends on how much fluid penetrates between the object and the solid surface.

Subject Categories:

  • Fluid Mechanics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE