Physics help angular velocity and inertia

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SUMMARY

The discussion focuses on two physics problems involving angular velocity and moment of inertia. The first problem involves a 20g weight attached to a 2.5m string, released at an angle of 53.1 degrees, requiring the calculation of angular velocity when angular acceleration is zero. The second problem involves calculating the moment of inertia for a uniform disc with a radius of 0.25m and mass of 10kg, attached to a 5kg thread. Both problems can be solved using established physics equations related to rotational motion.

PREREQUISITES
  • Understanding of angular velocity and angular acceleration
  • Knowledge of moment of inertia calculations
  • Familiarity with basic physics equations related to rotational motion
  • Ability to apply trigonometric functions in physics problems
NEXT STEPS
  • Study the equations of motion for rotational dynamics
  • Learn how to calculate angular velocity from angular displacement
  • Explore the concept of moment of inertia for various shapes
  • Review trigonometric applications in physics problems
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Students studying physics, particularly those focusing on mechanics, as well as educators seeking to enhance their understanding of angular motion and inertia calculations.

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Homework Statement


2 questions I really need help with
1) a 20g weight is attached to one free end of a 2.5m length of string, other end is attached to the ceiling. The weight is pulled to one side And released when the angle between the vertical and the string is 53.1 degrees. What is the angular velocity ofthe weight when the angular acceleration is zero

2) a uniform disc of radius 0.25m is attached to a thread of mass of 5kg. The disc has mass 10kg calculate the moment of inertia of the disc. Thanks very much any help greatly appreciated


Homework Equations





The Attempt at a Solution

 
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These both can easily be solved with the appropriate equations.
 

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