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Ek Physics 3
Equilibrium, toque, and energy
| Question | Answer |
|---|---|
| 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 |