A gas fills the right portion of a horizontal cylinder whose radius is 5.00 cm. The initial pressure of the gas is 1.01 105 Pa. A frictionless movable piston separates the gas from the left portion of the cylinder, which is evacuated and contains an ideal spring, as the drawing shows. The piston is initially held in place by a pin. The spring is initially unstrained, and the length of the gas-filled portion is 20.0 cm. When the pin is removed and the gas is allowed to expand, the length of the gas-filled chamber doubles. The initial and final temperatures are equal. Determine the spring constant of the spring.
Jordan Counsel Homework 5 1. How much camber should there be in a ski, with a running surface of 150cm, so that when half a 180lb skier’s weight is applied the pressure distribution over the length of the ski is constant Assume that the ski is resting on a flat, stiff surface, and that the ski has a constant section modulus (although we know this will not be good for flexing into a uniform arc)- rectangular cross-section of 20mm by 60mm and equivalent elastic modulus of 14,000MPa. Delta L = (F/(AY)) * L 0 -6 6 (180 (.959) (9.8)(1.5))/((20 * 60) x 10 )* (14000 x 10 ) -5 =7.15 x10 m
