fM 311 Final Exam
work
any 5 of the following 6 problems. cross out the problem
you do not want graded. If you fail to cross out a problem, then
the first b problems will be graded.
Show all work.
Each problem
has eclua} value
1. The ba*seball
is translating with velocity ?)A
:80
ft/s perpendicular
to the
bat
just
before
impact. Ttie player is swinging the bat with angular velocity
6tr ia6ls before the impact. Point C is the bat's instautatreous
center both
and afterttre
impact. The distances
b 14in, d:3
in and
U:26
in. The ball's nrass
is.01 slug ancl
the bat's mass
is.06 slugs. The bat's
rna,ss momeut of inertia is /6
:
'033 slug

ft''
After irnpact' the ball's
velocity u,A:
g0
ft,ls. LIse conservation
of angular
tnotnentum about A to
cle.termine
the angular velocity of t,he bat after impact'
u*,*,'^^.
$
r"1""
ry:, b
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ro
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