Physics, 20.05.2021 17:20 murtaghliam1
A cylindrical log of radius 0.4 meter, 5 meters in length, and with a mass of 50 kilograms is placed vertically in a lake so that it is free to bob up and down. Assume that there is no water resistance. A weight of 50 kilograms of negligible volume is attached to the bottom of the log so that it remains vertical (so the total mass of the log and weight together is 100 kilograms). The mass density of water is 1000 kilograms per cubic meter. (For convenience, assume that the acceleration due to gravity is g =10 meter per sec^2.
There are two forces acting on the log: gravity and the buoyant force of the water. The buoyant force can be computed from Archimedes' principle:
An Object that is completely Or partially Submerged in a fluid is acted on by an upward (buoyant) force equal to the weight of the displaced fluid. Let t be time in seconds and let d(t) denote the depth (in meters) of the bottom of the log.
Required:
Compute the depth deq of the log in its equilibrium position.
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