# Quantitative centripetal force apparatus-free body diagram

• prowler_sn
In summary, the conversation discusses a video on YouTube and raises two questions about it. The first question is about drawing a free body diagram of a rotating apparatus, specifically regarding the forces of gravity, tension, and the purpose of a counter mass. The second question is about the purpose of the counter mass and its role in balancing the apparatus.

#### prowler_sn

hi there i was looking at this video on utube and have two questions regarding it.

at 1:02. the person starts to rotate the apparatus. my first question is that HOW CAN U DRAW THE FREE BODY DIAGRAM OF THE MASS ATTACH TO THE SPRING while its rotating?
i know there is the mg downward from the mass. there is the tension force pointing towards the spring and another tension force up in the string the mass is attach to. am i missing anything?

an other question is that what is the purpose of the counter mass?

cheers

p.S this is NOT a homework question

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The counter mass balances the other mass... if you only had one, the centripetal force would pull the stand over if you went too fast.

Draw the free body diagram of it at one instant in time - basically the stand, spring and mass. You only need to draw the forces on it, not the actual rotation. Centripetal acceleration always points inwards, so its not changing in that sense.

## 1. What is a quantitative centripetal force apparatus-free body diagram?

A quantitative centripetal force apparatus-free body diagram is a visual representation of the forces acting on an object undergoing circular motion without the use of a physical apparatus. It shows the magnitude and direction of these forces in order to calculate the centripetal force required to keep the object in circular motion.

## 2. How is a quantitative centripetal force apparatus-free body diagram used?

A quantitative centripetal force apparatus-free body diagram is used to analyze the forces acting on an object undergoing circular motion. By accurately identifying and measuring these forces, the centripetal force can be calculated and used to determine the speed, radius, and mass of the object.

## 3. What are the key components of a quantitative centripetal force apparatus-free body diagram?

The key components of a quantitative centripetal force apparatus-free body diagram include the object undergoing circular motion, the centripetal force acting towards the center of the circle, the other forces acting on the object (such as tension or friction), and the angles and measurements needed to calculate the forces.

## 4. How do you create a quantitative centripetal force apparatus-free body diagram?

To create a quantitative centripetal force apparatus-free body diagram, you must first identify the object undergoing circular motion and the forces acting on it. Then, draw a dot to represent the object and draw arrows representing the magnitude and direction of each force. Finally, label the forces and angles, and use mathematical equations to calculate the centripetal force.

## 5. Why is a quantitative centripetal force apparatus-free body diagram important?

A quantitative centripetal force apparatus-free body diagram is important because it allows for the accurate analysis and calculation of forces involved in circular motion. This information is crucial for understanding and predicting the behavior of objects in circular motion, and has practical applications in fields such as engineering and physics.