Circular motion question: Mass on a rod rotating in a vertical circle

[yusungmagic]

Homework Statement

A mass is attached to the one end of a rod and made to rotate with constant speed in a vertical circle.

Relevant Equations

Free Body Diagram

By looking at the following question, I have no idea why the direction of force exerted by rod on a ball is represented like that. can anyone help me to understand?

 

[haruspex]

I have no idea why the direction of force exerted by rod on a ball is represented like that.

Like what? The only force I see represented is the weight of the ball. You are asked to add a representation of the force from the rod.

 

[yusungmagic]

sorry for the confusion, you are supposed to draw a force exerted on the mass by the rod. not the "W"

 

[PeroK]

sorry for the confusion, you are supposed to draw a force exerted on the mass by the rod. not the "W"

Have faith in Newton's laws! In particular, $\vec F = m \vec a$

 

[haruspex]

sorry for the confusion, you are supposed to draw a force exerted on the mass by the rod. not the "W"

What is the direction of the acceleration of the mass?