Question

A body floats in completely immersed condition in water as shown in figure. As the whole system is allowed to slide down freely along the inclined surface, the magnitude of buoyant force :

• A. remains unchanged
• B. increases
• C. decreases
• D. becomes zero

Answer 1

The correct option is C decreases

Buoyant force or Upthrust in normal condition = $\left(volum{e}_{(}solid\right)\left)\right({\rho }_{(}liquid\left)\right)g$

buoyant force acting in this condition = $V\rho gcos\theta$

hence resultant buoyant force decreases

so option (C) is correct