A body of mass 100 gram, tied at the end of a string of length 3 m rotates in a vertical circle and is just able to complete the circle. If the tension in the string at its lowest point is 3.7 n, then its angular velocity will be ______ (g = 10 m/s2)
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T=mgcosQ + mw.w.l
Where we is angular velocity
Solution is
3.7=1+0.3 w.w
0.3w.w=2.7
w.w=9
w=3
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