Biomedical Engineering Reference
In-Depth Information
F
r
P
f
R
M
1
=−
M
2
=
2.5
On the body in the drawing the moments
3
e
x
and
4
e
x
and
the forces
F
1
=−
e
z
and
F
2
=
2
e
z
are exerted. The forces are acting at the
points
e
z
. Calculate the resulting
moment vector with respect to point P, given by the position vector
x
1
=−
2
e
x
+
3
e
z
and
x
2
=
3
e
x
+
e
y
+
3
x
P
=
2
e
x
+
4
e
y
+
2
e
z
.
F
2
M
2
M
1
x
1
x
2
F
1
P
e
z
x
P
e
y
e
x
A person is pulling a rope. This results in a force
F
acting on the hand
at point
H
as depicted in the figure. Calculate the moment in the shoulder
(point
S
) and the elbow (point
E
) as a result of the force
F
. The following
vectors are given:
2.6
x
1
=
5
e
x
+
e
y
x
2
=
e
y
F
=
e
x
+
2
e
y
.
4
e
x
+
5
H
F
x
2
x
1
s
E
e
y
e
z
e
x
