I
1
Figure 22 A
Figure 2 2 B
(a) A s observed on o scillo sco p e .
(b) A s record ed by pen re co rd e r.
OUTPUT VOLTAGE eQ VS. TIME t FOR AMPLIFIER USED AS INTEGRATOR
The operations just carried out illustrate the basic operations perform ed by the com puter, but
the real value of the computer lie s in combining these elem entary operations in such a way as
to solve problem s.
ILLUSTRATIVE PROBLEMS
The operations just described are the basic operations which can be perform ed by the computer.
They are given to illustrate the method of setup and operation rather than because they are u se
ful in them selves. Only when the basic operations are combined for the solutions of com plex
problem s does the computer becom e a valuable tool for problem solving.
The following problem s will illustrate som e of the types of problem s, the solution o f which can
readily be obtained on the computer.
Components are furnished for use in solving some of these problem s.
For other problem s,
additional components are required. These may be standard radio components. Ordinary 5%
or 10% r e sis to rs may be used where accu racy of resu lts is not important, such as when only the
general nature of the problem solution is needed.
Additional problem s will be found in the referen ces at the back of the manual.
FALLING BODY PROBLEM: One of the sim plest problem s encountered in elem entary physics is
that of a body moving under the influence of a constant fo rce , such as the earth's gravitational
field near the surface of the earth. The equation for the motion of a body in such a field is
where g is the acceleration which a body experiences when in the earth's gravitational field and
y is the distance the body falls in time t. To find the value of y, it is necessary to integrate
twice.
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