7/25/2019 Solution Quiz3.PDF

1/1

Quiz

No.3

ME

311

First Name:

Last Name:

Section

:

Problem

1.

-

/J-'

fs /c'/a

17

Gasoline

enters

section

1 as

shown

in Figure.

at

0.5

m3

/sec.

What is average velocity at section

3?

ls

it

in

or

out?

It leaves

section

2

at

an average

velocity

of

12

m/sec.

Figure

1

,

Ql

=

62

.'f

ra/s

eo

0z-=

v(o,r>9)'Ctz)

=

o'

Ot

:

Q

+di

,r:

w

Q*

=

o.S

-

o- 7gf

=

o.'77e:i7sea

=

A1y71z1yr7

VA

=

/4.?tvTsoo

tau/)

t

SOfg

Jco

{1}

Problem

2.

The

water

jet

in

Figure

2

strikes

normal

to

a

fixed

plate.

Neglect gravity and

friction,

and compute

the force

F

in

newtons

required to hold the

plate

fixed.

^O

I

4

;-f-=

.u

tzvl'ft

ouf

-

ry'4,,,

,rl

;

,./

7

Fy

Z

6dd

/r/

..4-

(y-

/r'e #

I

*

F*

=

e4,

,,,'

=

(?gs

)(tr)(.ori(

O

)'

_

*F

x

74'

Figure

2