Lessons in Applied MechanicsMacmillan, 1891 - 512 σελίδες |
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Σελίδα 31
... practically used to measure angular velocity , but revolutions per minute is a common unit of measurement , so we must compare this method with the circular unit measurement . We have then- I revolution = circumference radius = 27 CHAP ...
... practically used to measure angular velocity , but revolutions per minute is a common unit of measurement , so we must compare this method with the circular unit measurement . We have then- I revolution = circumference radius = 27 CHAP ...
Σελίδα 35
... practically two screws , each of pitch 2p , and two threads must be cut in the nut . The nut moves as it would do on each alone , but there is twice as much bearing surface and hence less wear . The screw thus cut is said to have a ...
... practically two screws , each of pitch 2p , and two threads must be cut in the nut . The nut moves as it would do on each alone , but there is twice as much bearing surface and hence less wear . The screw thus cut is said to have a ...
Σελίδα 76
... practically get rid of the effect of R sin 0 , but we can , by suc- cessive improvements in smoothness of surface and in lubrication , continually diminish it ; and the only obstacle to complete elimination of its effect is imperfection ...
... practically get rid of the effect of R sin 0 , but we can , by suc- cessive improvements in smoothness of surface and in lubrication , continually diminish it ; and the only obstacle to complete elimination of its effect is imperfection ...
Σελίδα 78
... practically affect the motion , because it will pull the shaft against its bearing , and thus create friction . So actually it becomes a source of , not effort , but resistance . Whether there be friction or no then , the Effort will be ...
... practically affect the motion , because it will pull the shaft against its bearing , and thus create friction . So actually it becomes a source of , not effort , but resistance . Whether there be friction or no then , the Effort will be ...
Σελίδα 89
... practically we proceed thus : Divide mn the length ( Fig . 68 ) into ten equal parts , leaving half a part at each end ( Fig . 69 ) . ( This is done because the shape at the ends is liable to distortion . ) We thus ob- tain the ...
... practically we proceed thus : Divide mn the length ( Fig . 68 ) into ten equal parts , leaving half a part at each end ( Fig . 69 ) . ( This is done because the shape at the ends is liable to distortion . ) We thus ob- tain the ...
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Άλλες εκδόσεις - Προβολή όλων
Συχνά εμφανιζόμενοι όροι και φράσεις
action actual angular velocity applied axle balance beam bearing belt bending body boom called centre circle coefficient compression connecting rod consider constant crank effort crank pin curve cylinder diagram diameter distance draw effect elastic Energy exerted engine equal equation example feet flange foot length friction ft.-lbs girder given hence Hooke's Law inch joint length lift load mean mean effective pressure measure moment of inertia moving neutral axis obtain ordinates parallel piece piston position plane practically preceding pressure produced pull pulley radius radius of gyration relative motion represent resistance result revolution revolutions per minute right angles rivet rope rotating scale screw shaft shearing shown simply sliding pair speed steam stress stroke surface tension tons turning pair velocity ratio W₁ weight wheel whole
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