# Angular Acceleration and Tension in a Punching Bag

## 1) What is the initial angular acceleration of the punching bag when subjected to a horizontal force of 25 N?

Given that the punching bag has a mass of 21 kg and a radius of gyration of 0.38 m.

## 2) How can we determine the tension in the supporting cable AB?

Given that the initial angular acceleration of the bag is 1.9 rad/s².

## 1) Initial Angular Acceleration Calculation:

The initial angular acceleration of the punching bag is calculated based on the applied horizontal force and the bag's properties.

## 2) Tension in the Supporting Cable AB:

The tension in the supporting cable AB can be determined by considering the free body diagram of the punching bag and using relevant equations.

The initial angular acceleration of an object is crucial in understanding its motion dynamics, especially when external forces are applied. In this case, the punching bag's initial angular acceleration is directly related to the horizontal force of 25 N applied to it.

By utilizing the torque equation τ = Iα, where τ represents torque, I is the moment of inertia, and α is the angular acceleration, we can calculate the bag's initial angular acceleration. The moment of inertia (I) can be calculated using the mass (m) and radius of gyration (kG) of the punching bag.

Similarly, determining the tension in the supporting cable AB involves analyzing the forces acting on the bag and considering its mass and properties. By setting up equations based on the free body diagram of the bag and using fundamental principles of physics, we can find the tension in the supporting cable AB.

Understanding angular acceleration and tension in objects like punching bags not only enhances our knowledge of physics but also helps in designing efficient workout equipment and ensuring safety during exercises. By mastering these concepts, we can optimize our training routines and prevent accidents due to inadequate equipment support.