Question

A 15 kg statue of a material with density (15500 kg/m3) is being raised from a...

A 15 kg statue of a material with density (15500 kg/m3) is being raised from a sunken ship. What is the tension in the hoisting cable when the statue is at rest

6) completely immersed in the water? [N]

7) (1 mark) out of the water? [N]

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Answer #1

Given,

mass of the statue is

density of the statue is

volume of the statue is

density of water is

acceleration due to gravity

Let   be the tension in the cable and be the buoyant force applied upwards by water on the statue.

When statue is immersed in water, its FBD is

If the statue is at rest, then the net force acting on it should be zero

When statue is out of water, its FBD is

If the statue is at rest, then the net force acting on it should be zero

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