PHYSICS 7C Study Guide - Quiz Guide: Normal Force

• School: UC-Irvine
• Department: Physics
• Course: PHYSICS 7C
• Professor: All

Document Summary

Problem 1: notice that this is a 2 part problem. A 2. 0 kg box and a 3. 0 kg box on a perfectly smooth horizontal oor have a spring of force constant 250 n/m compressed between them. If the initial compression of the spring is 6. 0 cm, nd the accelaration of each box the instant after they are released. Include free body diagrams for each box as part of your answer. Fnet = m a a = a2kg| = 250n/m |(. 06m)|/2kg = 7. 5m/s2 a3kg| = 250n/m |(. 06m)|/3kg = 5m/s2. A skier starts at the top of a very large, frictionless snowball, with a very small initial speed, and skis straight down the side. Fnety = m ay = mgcos( ) n = mv2/r. The instant that she loses contact the normal force is equal to 0. Take point 1 to be the initial starting position of the skier, and point 2 to be the point where she losses contact.