E nFISICA GENERAL TRABAJO COLABORATIVO FASE 2 TRABAJO Y ENERGÍA
RODRIGO DELGADO TORRES CODIGO 80.403.075
TUTOR: EDSON DANIEL BENITEZ
UNIVERSIDAD UNIVERS IDAD NACIONAL N ACIONAL ABIERTA Y A DISTANCIA DISTANCIA UNAD! UNAD ! ESCUELA DE CIENCIAS BASICAS" TECNOLOGIA E INGENIERIA INGENIERIA DE SISTE#AS ABRIL DE 20
%$ 5. L& '&(& )*+ ),(- &/+ *n +& 1,& *( 20.0 '& 6* +& '&(& )*+ ),(- *)* An*( )* -9-&" +( ),(-( (* &;,'&n '&'*n* -n -&n,)&)*( )* ',',*n )* ,&+ '&n,) ),*--,n*( *(&(" *+ ),(- *)* ,*n* n& &,)*/ ,n,-,&+ )* $0.0 '<(. En-*n* +& &,)*/ 6* ,*n* -&)& ),(- )*(=( )* +& -+,(,>n" (, +& ',&) )* +& *n*?& -,n=,-& )*+ (,(*'& (* -n,** *n *n*?& ,n*n& )&n* +& -+,(,>n.
D,
[email protected]',-& )* 1+,)( &+,-&-,>n )* +& ),
[email protected]',-& )* 1+,)(. 8. Un& *(1*&
[email protected](,-& 1+& *n && -n 50.0 )* ( +'*n ('*,). E(& ',('& *(1*& 1+& *n +,-*,n& -n 40.0 )* ( +'*n ('*,). D**',n* +&( )*n(,)&)*( )* +& +,-*,n& +& *(1*&. T*n,*n) *n -*n& *+ ,n-,, )* A6?'*)*(
Densidad del aguaρ a=
1000 kg
m
E(1*& ('*,)& *n &&
3
W e =me∗g = ρe∗v e∗g
f e =m a∗g = ρa∗v a∗g
I&+&'( ρe∗v e∗g= ρa∗v a∗ g
C&n-*+&n) +& &*)&)
ρe ρa
v
= a =0.50 ve
Enn-*( ρe =
ρe =0.50∗ ρa∗v a
∗
0.50 1000 kg 3
m
Densidad de laesfera ρ e=
500 kg 3
m
E(1*& ('*,)& *n +,-*,n& W e =me∗g = ρe∗ v e∗g f ' g= mg∗ g = ρg∗v g∗g
I&+&'( ρe∗ v e∗g= ρg∗v g∗g vg
C&n-*+&n) +& &*)&)
Enn-*(
ρg =
ve
=
ρ e ρ g
= 0.40
ρe 0.40
500 kg 3
ρg =
m
0.40
Densidad de la glicerinaρ e =
1250 kg 3
m
. Un& '&n*& )* $.5 -' )* ),@'* *( ,+,/&)& && ++*n& n &+)* )* $8 +,(. S, +& '&n*& &)& )* ',n && ++*n& *+ &+)* $ L$0 -'! C@+ (*@ +& *+-,)&) )*+ && &+ (&+, )* +& '&n*& S? *+ ),@'* )* +& '&n*& (* *)-* & $.00 -' C@+ (*@ +& *+-,)&) )*+ && &+ (&+, )* +& '&n*&" (n,*n) +& ',('& &(& )* 1+H
*& )* +& (*--,>n &n(*(&+ )* +& '&n*& A = π r
2
( ) ( )
= π
d
2
=π
4
1.5 4
2
cm
2
=0.56 πc m
2
L& &(& )* 1+H *( )* $8 +,(<45(. A+ ,&+&(* -n *+ )- Av (* ,*n* A v=
+ (,,*n*. v=
3
∗
cm
18 10
18 L
s
=
∗
3
3
cm 45 s
18 10
3
2
(0.56 πc m )( 45 s )
=227.36 cm / s
V*+-,)&) )*+ && &+ (&+, )* +& '&n*&
227.36 cm
/s
S? *+ ),@'* )* +& '&n*& (* *)-* & $.00 -' C@+ (*@ +& *+-,)&) )*+ && &+ (&+, )* +& '&n*&" (n,*n) +& ',('& &(& )* 1+H
( ) ()
2
A = π r = π
2
d
2
=π
4
1
4
2
c m =0.25 πc m
2
#,('& &(& )* 1+H v=
∗
3
18 10
cm
2
3
(0.25 πc m )( 45 s )
=509.29 cm / s
V*+-,)&) )*+ && &+ (&+, )* +& '&n*&
509.29 cm
/s
