Review Outline: Liquids and Gases
Liquids: Force, pressure, and density. Floating and immersed bodies. Laws: Liquid force, F = A.h.d, Pascal's, Archimedes. Illustrations and Applications:
Specific gravity, W_{a}/(W_{a} - W_{w}), (W_{a} - W_{l})/(W_{a} - W_{w}), Boyle's, PV = P´V´
Devices: Hydraulic press, air cushion, barometer—mercurial and aneroid. Pumps, lift, force, vacuum, compression, centrifugal, balloon, siphon, etc. Construction and action of each.
[CHAPTER V]
FORCE AND MOTION
(1) Force, How Measured and Represented
71. Force.—We have been studying various forces, such as air pressure, pressure in liquids, and the force of elasticity in solids, and have considered them simply as pushes or pulls. A more formal study of forces in general and of devices for representing and measuring them will be helpful at this point of the course.