#Buoyancy and Apparent Weight: Your Ultimate AP Physics 2 Guide 🚀

Hey there, future physicist! Let's dive into buoyancy and apparent weight – key topics for your AP Physics 2 exam. Think of this as your personal cheat sheet, designed to make everything click. Let's get started!

#Buoyancy: The Upward Push

Buoyancy is all about that upward force a fluid exerts on an object. It's like the fluid is trying to push the object back up! This force happens because pressure increases with depth, creating a net upward push.

• What causes it? Pressure difference! Higher pressure at the bottom of an object pushes it up. ⬆️

• Buoyant Force (Fb): This upward force is equal to the weight of the fluid displaced by the object. That's Archimedes' Principle in action! 💡

  

  Caption: An object submerged in water experiences an upward buoyant force equal to the weight of the water it displaces. 🌊

#Archimedes' Principle

Imagine you drop a baseball into a bucket of water. Some water spills out, right? The weight of that spilled water is exactly the buoyant force acting on the baseball. 🚣🏼‍♀️

Formula:

$$F_b = V_{object} \cdot \rho_{fluid} \cdot g$$

Where:

• $F_b$ = Buoyant Force
• $V_{object}$ = Volume of the object (or the volume of fluid displaced)
• $\rho_{fluid}$ = Density of the fluid
• $g$ = Acceleration due to gravity (approx. 9.8 m/s² or 10 m/s²)

#Example Problem

Let's calculate the net force on a box with a mass of 15 kg and a volume of 0.2 m³ when fully submerged in water:

1. ...