274 



Mechanics of Solids (Statics and Dynamics). 



No. 



51 912. 1 : 9. 



51 913. 1 : 9. 





51 914. 1 : 7. 



51 919. 1 : 6. 



51 921. 1 : 4. 



51 922. 1 : 5. 



51.912. Apparatus (Frick's) for Stable Equilibrium (Fr. phys. Techn. I, 2, Fig. 2107 [I, Fig. 96]), i * <i 

 Figure O.lo.u 



51.913. --idem, in the form -shown in Fig. 51,913 (M. T., p. 44) 0.14.0 



51.914. Apparatus (Bock's), Figure, for demonstrating the position of the centre of gra- 

 vity of a mass according as the individual parts are firmly or loosely combined (Fr. 



phys. Techn. I, Fig. 97; M. P. I, Fig. 186) 1. o.o 



If the pendulums are loosened, their origins of force are shifted to the points of suspension, and 

 the centre of gravity is accordingly situated above the point of support; the apparatus collapM s. 



51.915. 3 Spheres, 1 Plane and 2 Arched Plates for demonstrating stable and unstable equi- 

 librium (Kleiber, Lehrb. d. Phys., Fig. 36) 0. 4.0 



51.916. 3 Cones with Stands for the same purpose (Kleiber, Lehrb. f. Gymnas., Fig. 36) . 0.18.0 



51.917. Solid and hollow Half-cylinder (M. T., p. 45) 0. 4.0 



51.918. Solid and hollow Semi-circle (M. T., p. 45) 0. l.o 



51.919. Double Cone on Inclined Stand, Figure (Fr. phys. Techn. I, 2, Fig. 2114 [I, Fig. 98]) 0. <>. o 



51.920. Rolling Cylinder (Fr. phys. Techn. I, 2, Fig. 2116) 0. 7. 



51.921. -- idem (Friedr. C. G. Miiller's), Figure, with lead pencil for recording the 

 cycloidal path of the centre of gravity (M. T., Fig. 28) 0. 3.0 



51.922. Leaning Tower, of two parts, with plummet (M. P. I, Fig. 187 [185]), Figure 0. 9. o 



The tower remains standing as long as the centre of gravity is situated ]>ri ]>< ndirularly over 

 the base. 



51.924. 2 Triangles on 1 Stand, Figure, for explaining the position of the centre of gravity 0. s. o 



51.925. Equilibrium Figures, of .sheet metal: triangle, rectangle, trapeze, segment, semi-circle, 

 ellipse, ring, with stand 0.1 l.o 



51.926. Equilibrium Figures, of brass, F i g u r e, with centre of gravity constructed on them: 

 circle, triangle, square, trapezoid and pentagon, with cap for setting on :i stand fitted 



with a point (Fr. phys. Techn. I, 2, Fig. 2105), with stand 0. lli.d 



51.927. 3 Centre Of Gravity Figures, of sheet /inc, with holes on the edges, for suspending, 



and .! Centre of Gravity Figures, of wire (M. T., p. 44) . . . 0. (l.o 



51.928. Stability Apparatus (VVcinhold's) (W. D., Fig. 77 [70]), Figure 1. 10.0 



( 1 .!(), .VII. .-,112. 



