$A$ $2 \, kg$ mass is attached to a string of length $1 \, m$ and is whirled in a vertical circle at a constant speed of $5 \, m/s$. At what position will the tension in the string be $70 \, N$? $(g = 10 \, m/s^2)$.
- AAt the top of the circle
- BAt the bottom of the circle
- CAt the horizontal position
- DNone of these
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