110131-opp - Physics 122 1 Physics 122 2 Physics 122 3 T =k l Physics 122 4 Physics 122 5 x x F net a v 0 x 0 0 0 x 0 x 0 Physics 122 0 0 7 FS M FE

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Unformatted text preview: 1/31/11 Physics 122 1 1/31/11 Physics 122 2 1/31/11 Physics 122 3 T =k l 1/31/11 Physics 122 4 1/31/11 Physics 122 5 x x F net a v 0 x 0 0 0 x 0 x 0 1/31/11 Physics 122 0 0 7 FS M FE M What happens to these forces when the mass is at equilibrium (at rest)? when the mass is above or below equilibrium 1/31/11 (possibly moving)? Physics 122 8 1/31/11 Physics 122 9 Sonic ranger Cart Air track 1/31/11 Physics 122 10 0 x Nt c Ts c We c 1/31/11 Physics 122 11 a= Fnet m = kx m = k x m [F / x] = ML 1 = 1 k = 2 2 m M T ML T 1/31/11 Physics 122 12 T =k l At equilibrium: (y = 0) k l0 = mg Ts m Non-equilibrium: (y > 0) 1/31/11 F net = k (l0 y ) mg = kl0 ky mg = ky We m Physics 122 13 2 0 k m dv = dt dx =v dt 1/31/11 2 0 x Physics 122 14 df =g dt dg =f dt 1/31/11 Physics 122 15 x = cos t x = A cos v= 1/31/11 0 0 t A sin Physics 122 0 t 16 t t :0 2 :0 0 T T =2 0 1/31/11 0 Physics 122 2 = T 17 x t t0 x ( t ) = A cos( 0 ( t t 0 )) x (x) t= = cos( 0 ( t t ) t 0 )) t ( ) A A cos( 0 = A cos( 0 t 0 t 0 ) = A cos( 1/31/11 Physics 122 0 t ) 18 ...
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This note was uploaded on 12/28/2011 for the course PHYSICS 122 taught by Professor Bhagat during the Fall '11 term at Maryland.

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110131-opp - Physics 122 1 Physics 122 2 Physics 122 3 T =k l Physics 122 4 Physics 122 5 x x F net a v 0 x 0 0 0 x 0 x 0 Physics 122 0 0 7 FS M FE

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