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A rectangular plank of mass m(1) and hei...

A rectangular plank of mass `m_(1)` and height 'a' is on a horizontal surface. On the top of it another rectangular plank of mass `m_(2)` and height 'b' is placed. Find the potential energy of the system ?
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Text Solution

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Total potential energy of system `U = U_(1) + U_(2)`
=`m_(1)g (a)/(2) + m_(2) g(a + (b)/(2)) = [((m_(1))/(2) + m_(2)) a + m_(2) ((b)/(2))] g`.
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