A uniform chain of length `2m` is kept on a table such that a length of `60 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 the chain the on the table?

Explanation

Here, `L==2m, M=4kg, `
`l=60cm=0.6m, W=?`
Mass of hanging part of chain `=m=(4)/(2)xx0.6`
`1.2kg`
Height of c.g. of hanging part from the table
`h=(0.60)/(2)=0.30m`
Work done `=` force `xx` distance `=` mgh
`=1.2xx10xx0.3=3.6J`