A good hand writting and a clear screenshot if its necessary

A good hand writting and a clear screenshot if its necessary so I can read and understand the steps please

A man dives into a lake to retrieve a 165-kg mystic crystal (density p = 2700 kg/m^3]. Calculate the amount of force he would need to exert to lift it.

Solution

Solution :

To retrieve the crystal an equal and opposite force should be applied by the man against the force of water. Mass of man is neglected as it is not given.

That is

Force = Mg = 165*9.81 = 1619 N