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If three forces acting at a point be represented in magnitude and direction by the sides of a triangle taken in order, they will be in equilibrium.
Mathematical Formulae: For the Use of Candidates Preparing for the Army ... - Σελίδα 83
των R. M. Milburn - 1880 - 100 σελίδες
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## A Collection of Cambridge Mathematical Examination Papers: Papers in the ...

...fulcrum, then shall Pp + Qq + Rr + &c. = Pp' + QY + R'/ + &c. 2. If any two forces acting at the same point be represented in magnitude and direction by the sides of a parallelogram, the diagonal also represents their resultant in magnitude and direction. 3. In the screw,...

## The Mechanical Euclid: Containing the Elements of Mechanics and Hydrostatics ...

William Whewell - 1837 - 182 σελίδες
...parallel to them in direction and proportional to them in magnitude. * PROP. XIV. If three forces, represented in magnitude and direction by the sides of a triangle taken in order, act on a point, they will keep it in equilibrium. Let three forces, represented in magnitude and direction...

## An Elementary Treatise on Mechanics: For the Use of Junior University Students

Richard Potter - 1846 - 172 σελίδες
...in order, will represent the forces. Conversely, if three forces which act at a point be represented by the sides of a triangle, taken in order, they will be in equilibrium. This proposition is called the triangle of forces. If the three forces P, Q, R, in equilibrium, act...

## An Elementary Treatise on Mechanics: Intended for the Use of Colleges and ...

William Whewell - 1847 - 191 σελίδες
...at whatever point of the force the resolution be supposed to take place. 57. PIIOP. If three forces, represented in magnitude and direction by the sides of a triangle taken in order, act on a point, they will keep it in equilibrium. Let three forces, represented in magnitude and direction...

## An elementary treatise on mechanics

Richard Potter - 1848
...in order, will represent the forces. Conversely, if three forces which act at a point be represented by the sides of a triangle, taken in order, they will be in equilibrium. This proposition is called the triangle offerees. If the three forces, P, Q, R, in equilibrium, act...

## An Elementary Treatise on Mechanics: Embracing the Theory of Statics and ...

Augustus William Smith - 1855 - 307 σελίδες
...the triangle, taken in order, will represent the forces. Conversely, if the forces can be represented by the sides of a triangle, taken in order, they will be in equilibrium. Let the forces P, Q, and R be in equilibrium, and be represented by AB, AD, and AE respectively. Produce...

## AN ELEMENTARY TREATISE ON MECHANICS

AUGUSTUS W. SMITH - 1855
...the triangle, taken in order, will represent the forces. Conversely, if the forces can be represented by the sides of a triangle, taken in order, they will be in equilibrium. Let the forces P, Q, and R be in equilibrium, and be repreB sented by AB, AD, and AE respectively....

## Cambridge examination papers: a suppl. to the University calendar, 1856-59

...the pressure on the fulcrum be 25 pounds, what are the magnitudes of the forces ? 2. If three forces represented in magnitude and direction by the sides of a triangle taken in order, act on a point, they will keep it at rest. Two forces whose magnitudes are 12 and 5 pounds respectively,...

## An Elementary Treatise on Mechanics: Designed as a Text-book for the ...

John Bradford Cherriman - 1858 - 92 σελίδες
...(Q, K) Q' = B » + P » + 2 RP cos (B, P). Polygon of 30. Polygon of Forces. T/ 7 Forces acting on a point be represented in magnitude and direction by the sides of a polygon, taken in order, they will keep the point at rest. For if ABCDEF be the polygon, the forces...

## An Elementary Treatise on Mechanics: Embracing the Theory of Statics and ...

Augustus William Smith - 1863 - 307 σελίδες
...the triangle, taken in order, will represent the forces. Conversely, if the forces can be represented by the sides of a triangle, taken in order, they will be in equilibrium. Let the forces P, Q, and R be in equilibrium, and be repre sented by AB, AD, and AE respectively. Produce...