In the system , a 72.0 kg mass is released from rest and falls, causing the uniform 70.0 kg cylinder of diameter 30.0 cm to turn about a frictionless axle through its center. How far will the mass have to descend to give the cylinder 580 J of kinetic energy?
Rigid Body
A rigid body is an object which does not change its shape or undergo any significant deformation due to an external force or movement. Mathematically speaking, the distance between any two points inside the body doesn't change in any situation.
Rigid Body Dynamics
Rigid bodies are defined as inelastic shapes with negligible deformation, giving them an unchanging center of mass. It is also generally assumed that the mass of a rigid body is uniformly distributed. This property of rigid bodies comes in handy when we deal with concepts like momentum, angular momentum, force and torque. The study of these properties – viz., force, torque, momentum, and angular momentum – of a rigid body, is collectively known as rigid body dynamics (RBD).
In the system , a 72.0 kg mass is released
from rest and falls, causing the uniform 70.0 kg cylinder of diameter
30.0 cm to turn about a frictionless axle through its center. How far will
the mass have to descend to give the cylinder 580 J of kinetic energy?
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