Question 4 of 4 · Fluid Statics and Hydrostatic Forces · Intermediate · About 18 min
Anchor a submerged measuring float
A sealed instrument float is fully submerged in an open saline-water pool. The float has total mass and displaces of liquid of density . A vertical cord attaches the float to an anchor on the pool floor. Determine the buoyant force, float weight and cord tension when the float is stationary. Use ; assume no other contact forces.

Given
Total float mass: 58.0 kg
Displaced volume: 0.0650 m³
Fluid density: 1030 kg/m³
Gravity: 9.81 m/s²
Find
Buoyant force
Weight
Downward tether tension
Assumptions
Float completely submerged.
Cord vertical and taut.
Liquid at rest.
Worked solution
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