Dynamics for BeginnersMacmillan, 1887 - 178 páginas |
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Página 20
... initial position ? Let the required interval be x seconds ; then since therefore , or , or , s = ut + at2 , 1600 = 400x - 16x2 , x2 - 25x + 100 = 0 , ( x - 20 ) ( x - 5 ) = 0 . So that , either x = 20 , or x = 5 . Thus the required ...
... initial position ? Let the required interval be x seconds ; then since therefore , or , or , s = ut + at2 , 1600 = 400x - 16x2 , x2 - 25x + 100 = 0 , ( x - 20 ) ( x - 5 ) = 0 . So that , either x = 20 , or x = 5 . Thus the required ...
Página 21
... initial position ? 2. A point has initially 20 velos , and it has 2 celos ; how long will it take to go 100 ft . ? and how far will it go in attaining a velocity of 25 velos ? 3. One point P has initially 200 velos and it has 32 celos ...
... initial position ? 2. A point has initially 20 velos , and it has 2 celos ; how long will it take to go 100 ft . ? and how far will it go in attaining a velocity of 25 velos ? 3. One point P has initially 200 velos and it has 32 celos ...
Página 22
... initial velocity ; and if it had 4 celos from rest , find when and where it started from rest . 3. At the beginning of an interval of 12 seconds a point has 40 velos , and its average velocity for the 12 seconds is 80 velos ; find its ...
... initial velocity ; and if it had 4 celos from rest , find when and where it started from rest . 3. At the beginning of an interval of 12 seconds a point has 40 velos , and its average velocity for the 12 seconds is 80 velos ; find its ...
Página 28
... initial velocity . ( i ) ( ii ) 4 poundals acting for 3 secs . on 3 lbs . having initially 4 velos . 5 poundals acting for 4 secs . on 10 lbs . having initially 20 velos . 22 poundals acting for 3 secs . on lb. having initially 4 velos ...
... initial velocity . ( i ) ( ii ) 4 poundals acting for 3 secs . on 3 lbs . having initially 4 velos . 5 poundals acting for 4 secs . on 10 lbs . having initially 20 velos . 22 poundals acting for 3 secs . on lb. having initially 4 velos ...
Página 29
... initial velocity and the magnitude of the force . 21. A particle acted on by a constant force of 20 poundals passes over 72 ft . while its velocity increases from 16 to 20 velos ; find its mass . 22. A particle acted on by 20 poundals ...
... initial velocity and the magnitude of the force . 21. A particle acted on by a constant force of 20 poundals passes over 72 ft . while its velocity increases from 16 to 20 velos ; find its mass . 22. A particle acted on by 20 poundals ...
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Términos y frases comunes
20 velos 32 celos 32 poundals A. W. VERRALL action of gravity additional velocity Assistant-Master Atwood's machine average velocity ball BEGINNERS BOOK Cambridge carriage circle coefficient of restitution Crown 8vo direction distance passed elastic engine English Example external force Extra fcap feet Fellow of St Fellow of Trinity find the velocity foot-poundals force acting friction Globe 8vo GRAMMAR Greek Hence horizontal plane impinges impulse inclined plane initial velocity instant J. P. MAHAFFY John's College kinetic energy late Fellow LATIN Lecturer LL.D mass m lbs mass-velocity Mathematics miles an hour miles per hour motion number of celos numerous Illustrations Owens College Oxford parabola parallelogram particle pound-velos poundals acting PRIMER Professor projectile prove resultant right angles School Second Edition secs Series shew smooth horizontal plane stone straight line string supposing tension tons train TRIGONOMETRY Trinity College uniform velocity uniformly unit interval University vertical Vocabulary weight yards
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