One end of a string of length 1.0 m is tied to a body of mass 0.5 kg. It is whirled in a vertical circle as shown in fig. If the angular frequency of the body is 4 rad s–1, what is the tension in the strong when the body is at the topmost point A? Take g = 10 ms–2.



Correct option is

3 N


Speed of the body (v) = Rω = 1.0 × 4 = 4 ms –1.  

Referring to fig, we find that, when the body is at the topmost point A, the tension in the string is  








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