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Why is it considered important to obtain the balance point near the midpoint of the wire |
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Answer» y, balance point of wire is the point where torque must be zero. according to rotational dynamics , we know torque acts along centre of mass of the system equals zero. e.g., centre of mass is located midpoint of wire. as you can calculate by using basic concepts of centre of mass. (0,0)A----------------------------B(L,0)let AB is wire of LENGTH L and mass m.cut an element of mass DMSO, dm = m/L DX now, centre of mass, x = = = hence, centre of mass of wire is located at midpoint of the wire. so, torque along midpoint of the wire equals zero. that's why, it is considered that balance point near the midpoint of the wire. |
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