 | James Thomson Bottomley - 1877 - 152 pages
...there is equilibrium among the forces we must have the sum of all the forces acting in one direction equal to the sum of all the forces acting in the opposite direction; or, calling those that act in one direction positive, and those that act in the opposite direction... | |
 | Robert Andrews Millikan - 1913 - 530 pages
...+ 100 + 200 - 50 = 550 ; that is, the mm of all the forces acting in one direction on the lever is equal to the sum of all the forces acting in the opposite direction. These two laws may be combined as follows: If we think of the force exerted by the spring balance as... | |
 | Robert Andrews Millikan, Henry Gordon Gale, Willard R. Pyle - 1922 - 564 pages
...+ 100 + 200 - 50 = 550 ; that is, the sum of all the forces acting in one direction on the lever is equal to the sum of all the forces acting in the opposite direction. A, ^40 4h50 100 800 FIG. 119 FIG. 120 Condition of equilibrium of a bar acted upon by several forces... | |
 | Robert Andrews Millikan, Henry Gordon Gale - 1927 - 634 pages
...it in the opposite direction ; (2) the sum of all the forces acting in one direction on the lever is equal to the sum of all the forces acting in the opposite direction. In the ideal lever the work expended on the lever by the effort equals the work accomplished by the... | |
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... the sum of all the forces acting in one direction on the lever is equal to the sum of all the forces acting in the opposite direction. 