A uniform chain of length 3   m and mass 3   kg overhangs a smooth table with 2   m laying on…

A uniform chain of length 3 m and mass 3 kg overhangs a smooth table with 2 m laying on the table. If K is the kinetic energy of the chain in J as it completely slips off the table, then the value of K is
Take g=10 m s-2

Solution

Apply conservation of energy Ui+Ki=Uf+Kf

−1×10×12+0=−3×10×1.5+KE

K.E.=45−5

K.E.=40 J

Asked in: JEE Main 2021 (26 Aug Shift 1)

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