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#4 | Work Energy Theorem

Concept Questions :-

Work-Energy theorem

(2)

          

Conserving energy from A to B:mgh=12mv2v=2gh=2gl-lcosθWhile crossing the equilibrium positionT=mg+mv2r=mg+ml2gl1-cosθ   =mg+2mg-2mg cosθ=mg3-2cosθ     3-2 cosθ=29401509.8=2     2 cosθ=1  cosθ=12θ=60°

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