How Does Water Affect the Weight of a Submerged Aluminum Plate?

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Homework Help Overview

The discussion revolves around the effects of water on the weight of a submerged aluminum plate, specifically focusing on calculating the tension in a cable lifting the plate at a constant velocity. The subject area includes principles of buoyancy and fluid mechanics.

Discussion Character

  • Exploratory, Assumption checking, Problem interpretation

Approaches and Questions Raised

  • Participants discuss the dimensions and density of the aluminum plate, with some attempting to calculate its volume and mass. Questions arise regarding the effects of water on the weight of the plate and what factors need to be considered in the calculations.

Discussion Status

The discussion is ongoing, with participants sharing initial calculations and considerations. Some guidance has been offered regarding the steps to take, but no consensus has been reached on the approach to solving the problem.

Contextual Notes

Participants are working under the assumption that the effects of viscosity can be ignored, and there may be constraints related to the specific conditions of the problem, such as the constant velocity of the lift.

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A diver finds a rectangular aluminum plate having dimensions 1.0m x 2.0m x 0.03m. A hoisting cable is lowered from the ship and the diver connects it to the plate. The density of aluminum is 2.7 x 10^3 kg/m^3. Ignore the effects of viscosity.Calculate the tension in the cable if it lifts the plate upward at a slow, constant velocity.
 
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What have you tried so far? What things are you going to have to consider?
 
well i got the volume n the rope is 35m long but other dan that i really don't know were to go
 
Work out the volume of the plate and it's mass.
Then work out the mass of an equal volume of water.

How much less will the plate weigh in water?
 

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