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Dowling. ME 240002.
1'1111
2000
ME 240, Practice MidlCml Exam #1 (100 pIS
'0
..
1)
10111100
You may usc the textbooks. class
notc.~,
homework. homework solutions. II calculator. and a crib
shceL Do the easiest problems first. If you run oul of lime. write n noiC describing how you would
complete the unfinished problem or problems.
REPORT ALL NUMERICAL ANSWERS WITH
UNITS,
1. A cat burglar makes her escape by jumping from rooftop to
rooftop
a~
shown.
If
the acceleration of the cat burglar i5
downward with magnitude g. determine:
a) (20 pIS) A formula for the initial horiwntal speed
Vo
necessary to complete the jump in terms
of
H,
Land g.
b) (15 pts) The horiwntal and vertical components of the cal
burglar's velocity when she lands on the lower roof when g
~
32.2 ftls2, H
=
10
fl
and L
=
18 fl.
2. A block
of mass mn slides on a vertical frictionless rod under the influence of gravity. A light
inextensibJe cable, attached to a spring with conMant k
s
•
pa~ses
over a frictionless puHey. and is
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 Fall '09
 PERKINS

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