semc said:
can anyone tell me why the reading on the balance changes when the bead is initially lowered into the fluid? The balance measure the normal force acting on the beaker right? So when the bead is submerge in the fluid the weight of the bead adds to the weight of the fluid so the normal force is larger so the reading on the balance increases right? So why is it that when the bead touches the bottom of the beaker the reading increases?The buoyant force is the upward force exerted by a fluid on an object immersed in it. It is equal to the weight of the fluid that the object displaces.
The buoyant force can be calculated by multiplying the density of the liquid, the acceleration due to gravity, and the volume of the displaced liquid. The formula is Fb = ρ x g x V, where ρ is the density, g is the acceleration due to gravity, and V is the volume of the displaced liquid.
The buoyant force of a liquid is affected by the density of the liquid, the volume of the displaced liquid, and the acceleration due to gravity. It is also affected by the shape and size of the object immersed in the liquid.
If the buoyant force is greater than the weight of the object, the object will float. If the buoyant force is less than the weight of the object, the object will sink. When the buoyant force is equal to the weight of the object, the object will remain suspended in the liquid.
Yes, the buoyant force of a liquid can change. It can change if the density or volume of the displaced liquid changes, or if the acceleration due to gravity changes. It can also change if the shape or size of the object immersed in the liquid changes.