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Physics - W.E.P. Question with Solution | TestHub

PhysicsW.E.P.Calculation of workMedium2 minQB

PhysicsMediumnumerical

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
$(Take g = 10 m s^{- 2})$

Answer:

40.00

Solution:

Apply conservation of energy $U_{i} + K_{i} = U_{f} + K_{f}$

$- 1 \times 10 \times (\frac{1}{2}) + 0 = - 3 \times 10 \times 1.5 + KE$

$K.E. = 45 - 5$

$K.E. = 40 J$

Stream:JEESubject:PhysicsTopic:W.E.P.Subtopic:Calculation of work

⏱ 2mℹ️ Source: QB

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