A square metal bar of side 1.90 cm and length of 25.90 cm is suspended about an axis, parallel to
the plane and passing through mid-point of the length, using a wire of radius (0.0501 + 0.1*45)
cm and length 27.56 cm. It is observed to make 40 complete swings in (335.7+0.2*45) sec. The
weight of the wire can be neglected
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