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Ek Physics 3

Equilibrium, toque, and energy

QuestionAnswer
torque T = Fl
KE 1/2*m*v^2
PE mgh
elastic PE 1/2*k*(x2-x2)^2 energy due to resistive force applied to deformed object
work W = F*d*cos(theta) where theta is angle btw F and d
conservative force force used and results in energy change that is the same regardless of path taken, net work in closed path = 0
nonconservative force forcdes that change mechanical energy of system when they do work, ex: friction
power P=(E2-E1)/t= W/t change in energy over time
instantaneous power due to a force P=F*v*cos(theta) where theta is angle btw F and v
Created by: miniangel918 on 2010-12-05



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