Hiscox, Gardner Dexter, 1822?-1908 · New York, The Norman W. Henley publishing co. · leaf 33
23. Rolling weight by horizontal push.^~ b h 22 THE MECHANICAL POWERS. … WStrain 24. THE WEDGK. Strain = force of blow X / w I, length of wedge.w, width of wedge.
Mechanical movements
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.