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

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To determine the tension in the cable lifting a submerged aluminum plate, first calculate the plate's volume and mass using its dimensions and the density of aluminum. The volume of the plate is 0.06 m³, leading to a mass of 162 kg. Next, find the mass of an equal volume of water, which is 60 kg. The buoyant force acting on the plate in water reduces its effective weight, resulting in a tension in the cable equal to the weight of the plate minus the buoyant force. The final calculation shows that the tension in the cable is 1,000 N when lifting the plate at a constant velocity.
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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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