Biomedical Engineering Reference
In-Depth Information
a
5
c
m
F
A
15 cm
18 kg
b
c
F
A
80 kg
3 m
1.6 m
4 m
2.5 m
5.8 Answers to Exercises
Exercise 5.1-5.4
Representation of levers and diagrams of corresponding forces.
Exercise 5.5 F
A
¼
400 N; third class lever.
Exercise 5.6 F
R
¼
187.5 N; second class lever.
Exercise 5.7 F
R
¼
1,500 N; first class lever.
Exercise 5.8
For biceps—third class lever; for triceps—first class lever.
Exercise 5.9
The torque is maximum when the angle between the arm and forearm
is 90
.
Exercise 5.10 F
¼
491.7 N; third class lever.
Exercise 5.11 F
¼
506 N; first class lever.
Exercise 5.12 F
BICEPS
¼
67 N;
F
REACTION
¼
587 N.
Exercise 5.13 T
120 N.
Exercise 5.14 F
A
¼
¼
160 N; MA
¼
5.
Exercise 5.15
(a)
F
A
¼
60 N; MA
¼
3;
(b)
F
A
¼
431 N; MA
¼
1.86;
(c)
F
A
¼
360 N; MA
¼
8.33.
