06quiz_11

06quiz_11 - Physics 9A-C Quiz week#6 Name last 4 of ID ,,and . ?Anume

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Physics 9A-C Quiz week #6 Name: 5/6/2011 last 4 of ID: mg F N å mg cos å å R R cos
å mg F å mg cos å R R cos
å A
skier
starts
at
the
top
of
a
very
large
frictionless
snowball,
with
a
very
small
initial
speed,
and
 skis
pointed
straight
down
the
side.

At
what
angle
å
with
the
vertical
does
she
lose
contact
with
 the
snowball
and
fly
off
at
a
tangent?

A
numerical
result
is
expected. Solution:
 Doesn't
this
one
seem
impossible.

If
you
have
no
idea
where
to
start,
draw
a
free
body
diagram!

 At
the
critical
point
the
normal
force
will
go
to
zero,
and
gravity
will
 completely
supply
the
centripetal
acceleration.
Summing
forces
in
the

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This note was uploaded on 09/28/2011 for the course PHY 9A taught by Professor Svoboda during the Spring '08 term at UC Davis.

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