- #1

Gaeun Kim

## Homework Statement

A uniform rigid bar of weight W is supported in a horizontal orientation as shown by a rope that makes a 30° angle with the horizontal. The force exerted on the bar at point O, where it is pivoted, is best represented by a vector whose direction is which of the following?

https://lh4.googleusercontent.com/MjprKKQrEIV7CuIYgPr4p6mVmgwciTI_6Hg5XV1gNgiL_0XKXsAFoo9nEXSdYP9JbenrfWd1WZ0MAC0=w1920-h918-rw

## Homework Equations

## The Attempt at a Solution

I could understand that a horizontal force pointing to the right is needed at the pivot point to counteract Tx. (The tension force exerted by the rope is T.) There should also be a force pointing upward, which counteracts W, the weight of the rigid bar. Since there is already Ty, I thought that there is no need for another upward force on pivot point O. The answer sheet says (B) is the answer, but right now I'm confused if the answer should be (C) or (B).