Question: A chain hangs on a thread and touches the surface of a table by its lower end. Show that after the thread has been burned

A chain hangs on a thread and touches the surface of a table by its lower end. Show that after the thread has been burned through, the force exerted on the table by the falling part of the chain at any moment is twice as great as the force of pressure exerted by the part already resting on the table.

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