Estimate the force a person must exert on a string attached to a $0\mathrm{.}140$ kgkg ball to make the ball revolve in a horizontal circle.The ball makes $2\mathrm{.}10$ revolutions per second $($TT $=0\mathrm{.}476$ ss $).$ Don't ignore the weight of the ball which revolves on a string $0\mathrm{.}630$ mm long. In particular, find the magnitude of F$$TF$$T$.[$Hint: Set the horizontal component of F$$TF$$T equal to maRmaR; also, since there is no vertical motion, what can you say about the vertical component of F$$TF$$T$?]$ Find the angle F$$TF$$T makes with the horizontal.