And collisions momentum definition of momentum o p

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: potential energy Elastic potential Energy • • • • • The process of storing energy in a deformable body such as a spring or rubber band is known as elastic potential energy To move a spring from x1 to x2 we must do work on the spring 121 w = kx2 − kx1 (Work done on spring) 2 2 if we stretch the spring father we do positive work on the spring; if we let the spring relac while holding one end we do negative work on it 1 12 wel = kx12 − kx2 (Work done by spring) 2 2 Physics 1001 Notes • • • 1 Uel = kx 2 2 1 12 Wel = kx12 − kx2 = Uel,1 − Uel,2 = −ΔUel 2 2 The more the spring is compressed or stretched the greater its elastic potential energy Situations with Both Gravitational and Elastic Potential Energy • The work done by all forces other than the gravitational force or elastic force equals the change the total mechanical energy E=K + U of the system, where U=Ugrav + Uel is the sum of the gravitational potential energy and the elastic potential energy Conservative and Non- Conservative forces • • • • Conservative force; A force that offers the opportunity of two way...
View Full Document

This note was uploaded on 04/09/2014 for the course PHYS 1001 taught by Professor Helenjohnston during the Three '13 term at University of Sydney.

Ask a homework question - tutors are online