Circular motion of bead and wire

[smallittle]

Homework Statement

A bead threaded on a frictionless vertical wire hoop of radius R. The hoop rotates about a vertical axis through its center. Period of revolution of the hoop is T. The bead has a mass m. Find the normal force N exerted on the bead by the wire.

Homework Equations

Fc=mv^2/r

The Attempt at a Solution

Not sure where to start.

Appreciate any help. Thanks.

 

[cupid.callin]

which force do you think will provide the required centripetal force ??

and which one will balance the weight?

 

[tiny-tim]

welcome to pf!

hi smallittle! welcome to pf!

(try using the X² icon just above the Reply box )

well, you've drawn both of the forces …

now, so that you can use F = ma, in what direction is the acceleration? ​