Force de Cheval. Horse power (French).
It is the French or metric horse power.
It is equal to:
542.496 Foot lbs. per second.
.9864 English Horse Power.
75.0 Kilogram-meters per second.
Force, Electro-magnetic.
The mechanical force of attraction or repulsion acting on the
electro-magnetic unit of quantity. Its intensity varies with the square
of the distance. It may also be defined as electric force in the
electro-magnetic system.
Its dimensions are equal to
mechanical force ((M*L)/(T^2)) divided by quantity ((M^.5)*(L^.5))
= ((M^.5)*(L^.5))/(T^2).
Force, Electrostatic.
The force by which electric matter or electrified surfaces attract or
repel each other. It is also termed electric force (not good) and
electro-motive intensity. It is the mechanical force acting upon a unit
quantity of electricity. Its intensity varies with the square of the
distance.
Its dimensions are therefore equal to
(quantity * unity / (square of distance) Q. * 1 / (L^2)
= ((M^.5) * (L^1.5) )/ T*1 / (L^2)
= ((M^.5) * (L^.5)) / T
These dimensions are also those of potential difference.
[Transcriber's Note: The image of the preceding paragraph is included
for "clarity".]
The objection to the term electric force is that it may be applied also
to electro-magnetic force, and hence be a source of confusion.
Forces, Parallelogram of.
The usual method of composing forces or resolving a force. The sides of
a parallelogram of forces represent component forces and the diagonal
represents the resultant. See Component--Resultant--Forces, Composition
of--Forces, Resolution of.
Forces, Composition of.
When several forces act in a different direction upon a point they may
be drawn or graphically represented as arrows or lines emanating from
the point in the proper direction and of lengths proportional to the
force they exercise. Any two can be treated as contiguous sides of a
parallelogram and the parallelogram can be completed. Then its diagonal,
called the resultant, will represent the combined action of the two
forces, both as regards direction and intensity. This is the composition
of two forces.
If more than two forces act upon the given point the resultant can be
composed with any of the others and a new force developed. The new
resultant can be combined with another force, and the process kept up,
eliminating the components one by one until a final resultant of all is
obtained. This will give the exact direction and intensity of the
forces, however many or varied.