Contact force

Classical Mechanics Level 3

A body of mass m m is at rest on a rough surface inclined at an angle α α with horizontal. What is the contact force acting between the body and the surface supporting it? (acceleration due to gravity is g g )

m g mg m g T a n α mgTanα m g S i n α mgSinα m g C o s α mgCosα

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1 solution

Steven Chase
Jul 22, 2019

The contact force must exactly resist gravity. Hence, its magnitude is m g mg

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