Mechanics for junior students

Εξώφυλλο
John Heywood Limited, 1883 - 200 σελίδες
 

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Συχνά εμφανιζόμενοι όροι και φράσεις

Δημοφιλή αποσπάσματα

Σελίδα 34 - Prove that the algebraic sum of the moments of two concurrent forces about any point in their plane is equal to the moment of their resultant about the same point.
Σελίδα 167 - ... inches long, closed at one end, filled with mercury, and inverted in a cup of mercury. The mercury...
Σελίδα 23 - When three forces acting at a point are in equilibrium, each force is proportional to the sine of the angle between the other two.
Σελίδα 18 - If two forces acting on a particle be represented in magnitude and direction by two adjacent sides of a parallelogram, the resultant of these forces will be represented in magnitude and direction by that diagonal of the parallelogram which passes through the particle.
Σελίδα 92 - Every body continues in its state of rest or of uniform motion in a straight line, except in so far as it may be compelled by force to change that state. 2. Change of motion is proportional to the force applied and takes place in the direction of the straight line in which the force acts.
Σελίδα 23 - If any number of forces, acting on a particle, be represented in magnitude and direction by the sides of a polygon taken...
Σελίδα 4 - The mean solar day is divided into 24 hours, each hour into 60 minutes, and each minute into 60 seconds.
Σελίδα 164 - The Specific Gravity of a substance is the ratio of its weight to that of an equal volume of water.
Σελίδα 170 - ... for a column of air of the height of the atmosphere is equal to a column of water of thirty-four feet, or one of mercury of twenty-nine inches, each having the same base.
Σελίδα 144 - specific gravity," and show that when a solid is immersed in a fluid, the weight lost is to the whole weight of the body as the specific gravity of the fluid is to that of the solid.

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