- #1
zorro
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Homework Statement
Suppose a uniform sphere of mass M and radius R is placed on a rough horizontal surface. It rolls without slipping.
We can apply 2 equations.
1) considering the torque due to frictional force about the centre of mass,
fR=I(alpha)
here alpha=a/R as the it is in pure rolling motion
so f=2Ma/5
2)considering the linear motion,
Ma=f
why are 1 and 2 contradicting.?