Question

what is buoyant force if two substances A and B of same size having the relative density 1.7 and 1.9 respectively which substance will experience larger force when both are submerged full in some liquid

please help I will mark brainlist​!!!!

Answer 1

Both body will experience same buoyant force.

Explanation:

• Buoyant force is force act by fluid on object, when object displaced fluid.

• Formula of buoyant force is

       $\mathbf{F_{b}=\rho _{f}\times V_{d}\times g}$      ...1)

       Where

       $\mathbf{F_{b}}$ = value of buoyant force on object by fluid

       $\mathbf{\rho _{f}}$ = density of fluid

      $\mathbf{V_{d}}$ = volume of fluid displaced by object

      g = gravitation acceleration

• From equation 1) it is clear that

1. Buoyant force is depend upon density of fluid. Means fluid which have higher density exert higher buoyant force.
2. Buoyant force is also depend upon volume of fluid displaced by object.Means if object displaced large volume of fluid, it exert large buoyant force.
3. Buoyant force is also depend upon gravitation acceleration. Means if object in satellite, there will no buoyant force due to value of gravitational acceleration is zero.

• Now come to question

1. Here size of both object is same means both object have same  volume.
2. Both are completely submerged means both object displaced same volume of fluid.
3. Density of fluids is same for both object.
4. Gravitation acceleration is also same for both object.
5. So both body experience same buoyant force.