# Free body diagram with circular motion

## Homework Statement

In a circular rotating room (think Gravitron), there are two blocks stacked against the wall and do not drop. Block A is touching block B, and block B is touching the wall.

## The Attempt at a Solution

I know how to do this problem, but I am not sure about where to draw the friction vectors. My intuition tells me straight up, but it seems like my instructor did something different.

Related Introductory Physics Homework Help News on Phys.org
PhanthomJay
Homework Helper
Gold Member

## Homework Statement

In a circular rotating room (think Gravitron), there are two blocks stacked against the wall and do not drop. Block A is touching block B, and block B is touching the wall.

## The Attempt at a Solution

I know how to do this problem, but I am not sure about where to draw the friction vectors. My intuition tells me straight up, but it seems like my instructor did something different.
the friction force opposes the direction of relative motion or pending relative motion between the 2 objects.

PhanthomJay
Homework Helper
Gold Member
What's the direction of the acceleration? What force or forces provides the acceleration??

Constant speed.
OK I guess I was right, I must have gotten it confused with another lecture.
Thanks a lot!

PhanthomJay