Lecture 7: Calculation of horizontal component, buoyancy
Buoyancy
It is a net vertical force acting on the submerged body in a fluid, due to the hydrostatic pressure distribution. It is not a fundamental or physical force. It is an artifact of net pressure distribution in the vertical direction
, where is the volume of displaced fluid. The force acts vertically upward. Consider a cylinder of length ‘l’ and diameter ‘d’ immersed in the fluid:
(Fig. 7f)
Vertical force acting on the vertical side is zero.
Vertical force acting on the top circular surface
Note that this is the weight of the fluid trapped between the free surface of the fluid and the top surface of the object, and acts vertically downward)
, where 
is the volume of displaced fluid. The force acts vertically upward. Consider a cylinder of length ‘l’ and diameter ‘d’ immersed in the fluid:
