Analytical mechanics for students of physics and engineering (1913)
Dadourian, Haroutune Mugurditch, 1878- · New York, D. Van Nostrand company · leaf 184
the latter view, letdF be the resultant force* acting upon the element of massdm. Then since dm can move only at right angles to theline r, which joins it to the axis, dF must be perpendicularto r. When the body is given an angular displacement dd,dm is displaced through ds, therefore the work done… … Fig. 94. 170 ANALYTICAL MECHANICS where dG is the moment of dF about the axis. Thus thetotal work done by all the forces acting upon all the elementsin producing the angular displacement de is dW= f dG de -*x ff {de is the same for every element of mass.)= Gde, where G is the sum of the moments…
Mechanics, Analytic
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