Define Buoyancy.
The upward force exerted by a fluid on an object.
What is Archimedes' Principle?
The buoyant force on an object is equal to the weight of the fluid displaced by the object.
Define Apparent Weight.
How heavy an object feels when submerged in a fluid, which is the true weight minus the buoyant force.
What is the formula for density?
Density ($ \rho $) is mass (m) per unit volume (V): $ \rho = \frac{m}{V} $.
Define Buoyant Force.
The upward force exerted by a fluid that opposes the weight of an immersed object.
How do you calculate Buoyant Force?
1. Determine the volume of fluid displaced ($V_{object}$). 2. Find the density of the fluid ($\rho_{fluid}$). 3. Multiply these by the acceleration due to gravity (g): $F_b = V_{object} cdot \rho_{fluid} cdot g$.
How do you calculate Apparent Weight?
1. Calculate the true weight ($F_g = mg$). 2. Calculate the buoyant force ($F_b$). 3. Subtract the buoyant force from the true weight: $W_a = F_g - F_b$.
What are the steps to determine if an object will float or sink?
1. Calculate the buoyant force ($F_b$). 2. Calculate the force of gravity ($F_g$). 3. Compare $F_b$ and $F_g$: If $F_b > F_g$, it floats; if $F_b < F_g$, it sinks; if $F_b = F_g$, it is in equilibrium.
What happens when the buoyant force is greater than the force of gravity?
The object floats.
What happens when the buoyant force is less than the force of gravity?
The object sinks.
What happens when an object displaces a volume of fluid?
The fluid exerts an upward buoyant force on the object, equal to the weight of the displaced fluid.
What is the effect of increased depth on pressure in a fluid?
Pressure increases with depth, leading to a net upward buoyant force on submerged objects.
What happens when an object is fully submerged in a fluid?
The object experiences an apparent weight that is less than its true weight due to the buoyant force.
