Magnitude of the tension in the string based problem
An object of 0.20 kg joined to the end of the string swings in a vertical circle of radius 80 cm. At the top of the circle the speed of the object is around 4.5 m/s. Find out the magnitude of the tension in the string at this position?
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A uniform cylindrical coil in vacuum consist of r1=1m, l1=1m and 100 turns, coaxial and at the centre of this coil is a smaller coil with r2 = 10cm, l2 = 10cm and 10 turns. The mutual inductance of two coils is??
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