 | John Martin Frederick Wright - 1831 - 282 σελίδες
...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,... | |
 | William Whewell - 1837 - 226 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... | |
 | Richard Potter - 1846 - 190 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... | |
 | William Whewell - 1847 - 208 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... | |
 | Richard Potter - 1848 - 196 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 offerees. If the three forces, P, Q, R, in equilibrium, act... | |
 | Augustus William Smith - 1855 - 340 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 repreB sented by AB, AD, and AE respectively. p/^\... | |
 | Augustus William Smith - 1855 - 368 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... | |
 | Cambridge univ, exam. papers - 1856 - 200 σελίδες
...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,... | |
 | John Bradford Cherriman - 1858 - 108 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... | |
 | Augustus William Smith - 1863 - 340 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... | |
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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. 
