A 50 kg rod has a box hanging from it and is suspended from the ceiling by a string. The entire system is in static equilibrium. A = 6 cm & B = 16 cm. The dark circle represents the center of mass of the rod. What is the tension of the string and what is the mass of the box?
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A 50 kg rod has a box hanging from it and is suspended from the ceiling by a string. The entire system is in static equilibrium. A = 6 cm & B = 16 cm. The dark circle represents the center of mass of the rod. What is the tension of the string and what is the mass of the box?


The mass of the rod is
The tension acting in the string is T
W1 and W2 are the weight of the rod and the box respectively. The weight always acts at the centre of mass.
In equilibrium, the net moment about the axis of rotation is 0.
Here, the axis of rotation is the point where the rod is connected to the string.
Moment of force is given by the product of force acting and the perpendicular distance between line of action of force and the axis.
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