A stone of mass 900 g is tied to a string and moved in a vertical circle of radius 1 m making 10 rpm. The tension in the string, when the stone is at the lowest point is (if $\pi ^ { 2 } = 9.8$ and $g = 9.8 \mathrm {~m} \mathrm {~s} ^ { - 2 }$)\\
(1) 97 N\\
(2) 9.8 N\\
(3) 8.82 N\\
(4) 17.8 N