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JEE Main 202126 AugustMorning Shift
Exam
JEE Main
Year
2021
Date
26 August
Shift
Morning Shift
Subject
Physics
Chapter
Work, Power and Energy

JEE Main 2021 · 26 August · Morning Shift · Physics · Work, Power and Energy

A uniform chain of length 3m and mass 3kg overhangs a smooth table...

A uniform chain of length 3m3m and mass 3kg3kg overhangs a smooth table with 2m2m laying on the table. If KK is the kinetic energy of the chain in JJ as it completely slips off the table, then the value of KK is
(Takeg=10ms−2)\left(\text{Take}g = 10m{s}^{- 2}\right)A uniform chain of length 3m and mass 3kg overhangs a smooth table with 2m laying on the table. If K is the kinetic

Correct answer

0

Step-by-step solution

A uniform chain of length 3m and mass 3kg overhangs a smooth table with 2m laying on the table. If K is the kinetic

Apply conservation of energy Ui+Ki=Uf+Kf{U}_{i} + {K}_{i} = {U}_{f} + {K}_{f}

−1×10×(12)+0=−3×10×1.5+KE- 1 \times 10 \times \left(\dfrac{1}{2}\right) + 0 = - 3 \times 10 \times 1.5 + KE

K.E.=45−5\text{K.E.} = 45 - 5

K.E.=40J\text{K.E.} = 40J

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