Sphere rolling down an inclined plane

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SUMMARY

A sphere of radius r and mass m rolling down an inclined plane at an angle theta can be analyzed using the conservation of energy principle. The total energy consists of potential energy, kinetic energy of the center of mass, and rotational energy around the center of mass. By expressing angular velocity in terms of linear velocity, one can derive a single equation for linear velocity as a function of time t, starting from rest.

PREREQUISITES
  • Understanding of conservation of energy principles in physics
  • Familiarity with rotational dynamics and moment of inertia
  • Knowledge of kinematic equations for linear motion
  • Basic calculus for deriving equations of motion
NEXT STEPS
  • Study the derivation of the moment of inertia for a solid sphere
  • Learn about the relationship between linear and angular velocity
  • Explore the application of conservation of energy in different physical systems
  • Investigate the effects of friction on rolling motion
USEFUL FOR

Physics students, educators, and anyone interested in understanding the dynamics of rolling objects and energy conservation principles.

aorrdalca
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I've seen a number of posts on the following question, but don't believe any contain a solution to the following very simple scenario:

A sphere of radius r and mass m rolls down a plane inclined at theta degrees. What are its linear and angular velocities at any time t thereafter, assuming it starts at rest?

Perhaps I've missed the answer elsewhere; if so, apologies.
 
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Here is a hint: write down the conservation of energy (potential energy + kinetic energy of center of mass + rotational energy around COM = const)
Then express angular velocity by linear velocity and you have an equation for linear velocity only!
 

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