PHYSICS 135 Chapter Notes - Chapter 11: Junkers J.I, Stra, Compressive Stress
64 views38 pages
Document Summary
2. 20 kg. m x m x m x. Identify: use eq. (11. 3) to calculate a point mass at that point. Set up: use coordinates with the origin at the left end of the bar and the x+ axis along the bar. m = The center of gravity of the bar is at its center and it can be treated as m = Execute: x cm (2. 40 kg)(0. 250 m) 0 (2. 20 kg)(0. 500 m) 2. 40 kg 1. 10 kg 2. 20 kg should be placed 29. 8 cm to the right of the left-hand end. Evaluate: the mass at the right-hand end is greater than the mass at the left-hand end. So the center of gravity is to the right of the center of the bar. Set up: use coordinates where the origin is at the original center of gravity of the object and x+ is to the right. With the 1. 50 g mass added, cmx of the composite object. x = .