Thanks for the replies!
Thus, ((mv^2)/r)sinx = mg.
Even if it is agreed that perfectly horizontal isn't possible (till the speed is infinity), when we swing the bob, it does seem to be close to the eye. Thus, x is small (4-5 degrees at the most?). Thus, isn't x too small for sinx to...
I was just wondering regarding this.
When we swing a bob tied to a thread, completely perpendicular to the vertical wall (that is, parallel to the floor), what force balances the weight of the bob?
I don't think it can be mv^2/r because that centripetal force is perpendicular to the...