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Σελίδα 28 - If three forces acting at a point are in equilibrium they can be represented in magnitude and direction by the three sides of a triangle taken in order.
Σελίδα 104 - ... inches long, closed at one end, filled with mercury, and inverted in a cup of mercury. The mercury...
Σελίδα 53 - First. A body in motion, and not acted upon by any external force, will move with a uniform velocity in a straight line.
Σελίδα 85 - Archimedean theorem, that when a solid body is immersed in a liquid, it loses a portion of its weight, equal to the weight of the fluid which it displaces or to the weight of its own bulk of the liquid.
Σελίδα 80 - Centre of Gravity. — The CENTRE OF GRAVITY of a body is that point through which the direction of its weight always passes.
Σελίδα 79 - The pressure, then, upon a given surface, is the same, whether it face upwards or downwards ; and may also be proved to be the same in whatever direction it be turned, provided its centre of gravity remain at the same depth below the liquid surface ; for this pressure is equal to the weight of a column of liquid whose base is the given surface, and whose length equals the depth of its centre of gravity. 168. In water, the pressure on any surface at the depth of 1 foot is equal to nearly half a pound...
Σελίδα 64 - The force is proportional to the square of the velocity and inversely proportional to the radius of turn during radial acceleration.