Force Between Two Objects - HP -22S Owner's Manual

Scientific calculator.

Force Between Two Objects
The following equation can be used to calculate the gravitational force
between two masses or the electrical force between two charged
objects:
F=KxAxB+RA2
where
A
=
the mass (in kilograms) or electrical charge (in cou-
lombs) of object A.
B=
the mass (in kilograms) or electrical charge (in cou-
lombs) of object B.
the force (in newtons).
F=
K=
a constant. K
=
6.67
X
10-
11
N-m
2
jkg
2
(gravitation)
or K
=
8.98756
X
10
9
C2 jN-m
2 .
R=
the distance between the objects (in meters).
Example: Gravitational Force. Calculate the gravitational force be-
tween the earth and the sun. The earth's mass is 5.983 x 10
24
kg; the
sun's mass is 1.938 x 10
30
kg. The sun is 9.3 x 10
7
miles from earth.
Keys:
Display:
I
EVAL
I
K?value
5.983
.m
24
I
INPUT
I
B?value
1.938.m 30
I
INPUT
I
R?value
9.3.m 7052800
120
R?5.8925E12
98
7: The Equation Library
Description:
Prompts for K.
Stores K, prompts for
mass of object A
(earth).
Stores
A,
prompts for
mass of object B (sun).
Stores B, prompts for
R.
Converts miles to
inches.  