biggz795 biggz795
  • 16-04-2024
  • Physics
contestada

A small disc is projected on a horizontal floor with a speed u. The coefficient of friction between the disc and the floor varies as?
1) Directly proportional to the speed of the disc
2) Inversely proportional to the speed of the disc
3) Constant
4) Depends on the mass of the disc

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