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EASTERN MEDITERRANEAN UNIVERSITY - Department of Physics
PHYS 11 !MIDTERM E"AM#$-% SUMMER S&H''( )A*+*st , #%.
STUDENT NO NAME SURNAME BOOKLET
A
INSTRUCTIONS
Answer all the questions.
o Section I consists o !" #ulti$le choice questions. Each
question is worth ! $oint. Mar% the
correct answers on the ANS&ER 'RID (elow) (* encirclin+ the
a$$ro$riate letter.
o Section II consists o , $ro(le#s worth a total o !" $oints.
&rite *our answers -irectl* on
the $a+e o each $ro(le#. or ull cre-it) ull* /usti* *our
answers.
Ti#e allowe- or the e0a# is !12 #inutes.
3ou #a* NOT use (oo%s) notes) -ictionaries) or#ula sheets) 4DAs)
#o(ile $hones) etc.
3ou #a* use a calculator.
CONSTANTS AND USEUL ORMULASConstants
g= 9.80 m/s2
2211/1067.6 kgNmG =
Velocity and acceleration:
( )( )
d tt
dt=
r5 ,
( )( )
d tt
dt=
5a
Constant acceleration kinematic equations:
o( )t t= +5 5 a ,
2
o o
1( )
2t t t= + +r r 5 a
Radial or centripetal acceleration:2
vR ca a
r= =
Newtons law of universal gravitation:
,2r
mMG =
Newtons second law:
m=. aorce of friction:
fr k k N = = (kinetic)
fr s s N = (static)
Mass of the Earth= 5.9742 1024kg
Mass of the Moon= 7.36 1022kgThe average centretocentre !istance
fro"
the Earth to the Moon is #8$,$0# k"
12 !!"net =
2
2
1mv! =
d" =
ANS&ER 'RID
Mar% *our answers to the test
questions on this +ri- (*
4LACIN' A CIRCLE aroun-
the letter o *our choice.
! 1 , 6 " 7 8 9 : !2 !! !1 !, !6 !"
a a a a a a a a a a a a a a a
( ( ( ( ( ( ( ( ( ( ( ( ( ( (
c c c c c c c c c c c c c c c
- - - - - - - - - - - - - - -
e e e e e e e e e e e e e e e
This line for instructor use only
For
instructor
use only
Section I
;!" $oints , of "ass mmAA=10 kg, is *ace! on a s&rface
incine! at #7: to the horionta. t is connecte! a
ight+eight cor!, +hich *asses over a "assess an! frictioness
*&e, to a secon! o> , +hich hangs
free as sho+n. f the coefficient of kinetic friction is 0.20 an!
mmBB=20 kg?
a) @ot the free o! !iagra"s for mmAAan! mmBB se*arate. (2
*oints)
2m2mmm
FF
$
FF
MM11
11
11
22
MM22
FFMM11
MM22
11
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PHYS101 Midterm Examination Summer 2008-09
4ro(le# 1 (tota of ' *oints)
Ase the infor"ation given on the cover *age to cac&ate at
+hat
s*ee!!oes the"oon orit the earth0
4ro(le# , (tota of ' *oints)
car traveing 60 k"/h can rake to a sto*
+ithin a !istance dof 20 ". f the car is
going t+ice as fast, 120 k"/h, +hat is its
sto**ing !istance- ss&"e the "a>i"&"
raking force is a**ro>i"ate in!e*en!ent
of s*ee!.
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