A uniform chain of length $$2$$ m is kept on a table such that a length $$of60$$ cm hangs freely from the edge of the table. The total mass of the chain is $$4$$ kg. What is the work done in pulling the entire chain on the table ?

Question

Infinity Learn · Accepted Answer

see fig  Mass per unit length $$=ML=42=2kg/m$$  Mass of the hanging chain $$=0$$⋅$$6$$×$$2=1.2kg$$ Centre of mass of the hanging part $$=0$$⋅$$6+02=0$$⋅$$3m$$ Work done in pulling the chain on the table is equal to work done agaitrst gravity $$W=$$$$mgh$$$$=1$$⋅$$2$$×$$10$$×$$0$$⋅$$3=3$$⋅$$6$$ joule

A uniform chain of length 2 m is kept on a table such that a length of60 cm hangs freely from the edge of the table. The total mass of the chain is 4 kg. What is the work done in pulling the entire chain on the table ?

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