What is the tension Tin the cord (see Fig. 7.1.30) connected to the ball of mass 0.1 kg rotating in a vertical'circle of radius 1m, if the speed of the ball is 0.2 m/s and `theta = 30^(@)` .

Explanation

`T=mv^(2)//r + mg cos theta = 0.1 xx 0.2^(2)//1 + 0.1 xx 9.8 cos 30^(@) = 0.85 N`