- #1
Vitani11
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Homework Statement
Consider a uniform solid disk of mass m and radius R, rolling without slipping down an inclined plane with an angle γ to the horizontal. The instantaneous point of contact between the disk and the incline is called P.
Homework Equations
ma = mgsinγ - μmgcosγ
Γ = Rmgsinγ-Rμmg
Moment of inertia about P = (3/2)MR2 from parallel axis theorem
Γ is torque
The Attempt at a Solution
Are these the correct equations to start out from? Probably not. My professor said you are to assume that there is friction and it will end up cancelling. I can do the problem without friction but not including it.
Γ = Rmgsinγ-Rμmg = (3/2)MR2α
gsinγ-μg = (3/2)a
a = (2/3)(gsinγ-μg)