SkittleJuice said:Are you sure http://en.wikipedia.org/wiki/Centripetal_force" is the right force?
Gravity is attempting to pull the weight down, which would turn the bar.
If the bar turned, the weight would get closer to the axis of rotation.
Is there a force that might be against the weight getting any closer to the axis of rotation?
;)
The concept of "bar holding a weight" in physics refers to the physical phenomenon of a rigid bar or rod supporting a load or weight at one or more points along its length. This concept is commonly used in engineering and mechanics to analyze the structural stability of various objects.
The distribution of weight along a bar has a significant impact on its stability. If the weight is evenly distributed along the bar, it will create a balanced system and the bar will remain stable. However, if the weight is concentrated at one end, it will create an imbalance and increase the risk of the bar tilting or collapsing.
The maximum weight a bar can hold depends on several factors, including the material and dimensions of the bar, the distribution of weight along the bar, and the strength and stability of the supports or connections holding the bar in place. Additionally, the force of gravity and any external forces acting on the bar can also affect its weight-bearing capacity.
The stability of a bar holding a weight is typically calculated using principles of static equilibrium, which involve analyzing the forces and moments acting on the bar. This can be done through mathematical equations or physical experimentation to determine the critical load at which the bar will become unstable.
The concept of "bar holding a weight" has many real-life applications, such as in building and bridge construction, where it is used to determine the structural integrity of load-bearing beams and columns. It is also relevant in sports and fitness, as weightlifting bars must be able to support the weight of the loaded plates without bending or breaking. Additionally, the concept is used in everyday objects, such as shelves and furniture, to ensure they can support the weight of the items placed on them.