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OCEAN GODRE Grade: 12
        a horizontal rod of mass m is hinged at 1end and the other end is conected to a vertical spring wth spring cnstant k..whn system is at eq. find the potential energy f the spring
6 years ago

Answers : (1)

Sukhendra Reddy Rompally B.Tech Mining Machinery Engg, ISM Dhanbad
93 Points
										

Hello!


Balancing the moments about the hinged end,you get mgl/2 = kxl ( since,weight at the centre of mass is mg and force at the other end is kx}


from this,you get x=mg/2k


now Potential energy of spring is 0.5kx^2,substituting the value of k,we get


potential energy of spring = (mg)^2/8k


THANKS


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6 years ago
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