it is a worked example. I am confused why the mass of water displaced =(2lp/cos theta),but not (pl/cos theta)?
i think the volume of the water displaced is equal to that of the immersed part OC which is (l/costheta)Xcross-section area. then the mass of water should be pl/costheta, but the answer is not that one. what is the fault in my thinking?
Last edited by a moderator: