Question: A pendulum is constructed as a light thin-walled sphere of radius R filled up with water and suspended at the point O from a light

A pendulum is constructed as a light thin-walled sphere of radius R filled up with water and suspended at the point O from a light rigid rod (Fig. 4.11). The distance between the point O and the centre of the sphere is equal to l. How many times will the small oscillations of such a pendulum change after the water freezes? The viscosity of water and the change of its volume on freezing are to be neglected.


A pendulum is constructed as a light thin-walled sphere of

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