- #1
kirafreedom
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Homework Statement
A ball of clay of mass m travels with velocity v in a path tangent to a disk of radius R and mass M. The clay collides with the disk tangentially to its outer rim ( a totally inelastic collision) and the clay and disk begins to spin about the axis.
a) What is the final angular speed of the clay and disk ( don't forget to include the mass m after the collision.
b) if the clay had collided with the rim at an angle of 30° to the tangent line what would the final angular speed be then
Homework Equations
v'b=v'a
va=v'acosθ+v'bcosθ
The Attempt at a Solution
a)
mva=mv'acosθ+mv'bcosθ
0=mv'asinθ+mv'bsinθ
v'b=-va(sinθ/sin(-θ))
v'a=v'b
=va/2cosθ
b) I am not sure without knowinif the formula above is correct