This preview shows pages 1–2. Sign up to view the full content.
ASSIGNMENT NO. ( 5 ) – KINETICS OF A PARTICLE
FORCE AND ACCELERATION
NEWTON` S SECOND LAW OF MOTION
1.
The
50 – kg
crate shown in Fig. 1, rests on a horizontal plane for
which
the
coefficient of
kinetic friction
μ
=
0.3 .
If the crate
is
subjected
to a
P = 400
N
towing
force as
shown ,determine the velocity of the crate in
3
seconds starting from rest.
2.
A mine car has a mass of 400 kg is
subjected to a tension force, exerted by a motor
M ,
which is varying with the time P = 3200 t
2
N , where t is in seconds. If the car was
initially
moving with an upward velocity of
v
o
=
2
m / s , determine its velocity and
position after two seconds.
(
g =
10
m / s
2
, tanα = 8/15 ) .
3.
In the position interval
0
≤
x
≤
8
m ,a
truck
of mass 600 kg is moving from rest
from the origin O on the rough
road
for
which
μ
= 0.15 .
If the truck is acted upon
by a
horizontal
force
F =
600 ( x + 6 )
N and a
resisting
force
R=50
√
3 x
2
N ,
where
x
is
in
meters,
determine
the
acceleration
and
This preview has intentionally blurred sections. Sign up to view the full version.
View Full Document
This is the end of the preview. Sign up
to
access the rest of the document.
This note was uploaded on 12/21/2010 for the course ENGINEERIN mp108 taught by Professor Elbarki during the Spring '08 term at Alexandria University.
 Spring '08
 elbarki

Click to edit the document details