using System; using L=Science.Physics.GeneralPhysics; namespace Serway.Chapter11 { /// /// Example06: The Seesaw /// A father of mass m_f and his daughter of /// mass m_d sit on opposite ends of a seesaw at equal /// distances from the pivot at the center (Fig. 11.9). /// the seesaw is modeled as a rigid rod of mass M and /// length l and is pivoted without friction. At a /// given moment, the combination rotates in a vertical /// plane with an angular speed \omega. /// (A) Find an expression for the magnitude of the system's /// angular momentum. /// L = l^2/4*(M/3 + m_f + m_d)\omega /// (B)Find an expressionfor the magnitude of the angular /// acceleration of the system when the seesaw makes /// an angle \theta with the horizontal. /// \alpha = 2(m_f - m_d)g\cos\theta / (l(M/3 + m_f + m_d)) /// public class Example06 { public Example06() { } private string result; public string Result { get{return result;} } public void Compute() { result = "Read the book!"; } } }