lanadelreydolli lanadelreydolli
  • 04-02-2016
  • Physics
contestada

If you push a chair across the floor at a cibstant velocity how does the force of friction compare with the force you exert?

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AL2006
AL2006 AL2006
  • 04-02-2016

-- "constant velocity"   ===>    acceleration is 0 .

-- acceleration=0   ===>   forces are balanced

-- balanced forces   ===>  (friction) + (force you exert)  =  0

                                           (friction) = -(force you exert)

                        They have equal magnitude and opposite direction. 

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