using System; using L=Science.Physics.GeneralPhysics; namespace Serway.Chapter10 { /// /// Example09: The Net Torque on a Cylinder /// A one piece cylinder is shaped as shown in Figure 10.15, /// with a core section protruding from the large drum. /// The cylinder is free to rotate about the central axis /// shown in the drawing. A rope wrapped around the drum, /// which has radius R_1, exerts a force T_1 to the right on the /// cylinder. A rope wrapped around the core, which has /// radius R_2, exerts a force T_2 downward on the cylinder. /// (A) What is the net torque acting on the cylinder about /// the rotation axis (which is the z axis in Figure 10.15)? /// (B) Suppose T_1 = 5.0 N, R_1 = 1.0 m, T_2 = 15.0 N /// and R_2 = 0.50 m. What is the net torque about the /// rotation axis, and which way does cylinder rotate /// starting from rest? /// public class Example09 { public Example09() { } private string result; public string Result { get{return result;} } public void Compute() { L.Position r1 = new L.Position(); r1.Y = 1.0; L.Position r2 = new L.Position(); r2.X = -0.5; L.Force f1 = new L.Force(); f1.X = 5.0; L.Force f2 = new L.Force(); f2.Y = -15.0; L.Torque tau1 = new L.Torque(r1,f1); L.Torque tau2 = new L.Torque(r2,f2); L.Vector totaltau = tau1 + tau2; result+=totaltau.ToString(); } } } //0 +/- 0 i +0 +/- 0 j +2.5 +/- 0 k