Dynamics for BeginnersMacmillan, 1887 - 178 páginas |
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Página 14
... , having started from rest ; shew that if its velocity has been uniformly increasing , it is moving at the end of that quarter of an hour with a speed of 80 miles per hour . ACCELERATION . 18. DEF . When a point is moving 14 DYNAMICS .
... , having started from rest ; shew that if its velocity has been uniformly increasing , it is moving at the end of that quarter of an hour with a speed of 80 miles per hour . ACCELERATION . 18. DEF . When a point is moving 14 DYNAMICS .
Página 30
... horizontal plane ; the friction of the rails etc. is equivalent to a retarding force of 250 poundals , how long will the train take to get up from rest a speed of m miles per hour ? 38. DEF . The mass - velocity ( or , 30 DYNAMICS .
... horizontal plane ; the friction of the rails etc. is equivalent to a retarding force of 250 poundals , how long will the train take to get up from rest a speed of m miles per hour ? 38. DEF . The mass - velocity ( or , 30 DYNAMICS .
Página 31
... speed of 15 miles an hour in going 121 ft . from rest . [ I stone = 14 lbs . ] We have or , Also 15 miles an hour = 22 velos . 2as = = v2 , [ Ex . ii . p . 3. ] 2α × 121 = ( 22 ) 2 ; therefore , a = 2 . 20 stone = 20 × 14 lbs ...
... speed of 15 miles an hour in going 121 ft . from rest . [ I stone = 14 lbs . ] We have or , Also 15 miles an hour = 22 velos . 2as = = v2 , [ Ex . ii . p . 3. ] 2α × 121 = ( 22 ) 2 ; therefore , a = 2 . 20 stone = 20 × 14 lbs ...
Página 33
... speed of 30 miles an hour ? 4. A rifle bullet of 1 oz . leaves the barrel of a rifle which is 2 ft . 6 in . long with a velocity of 1200 feet per second ; find the resultant force , supposed uniform , with which it was acted on in the ...
... speed of 30 miles an hour ? 4. A rifle bullet of 1 oz . leaves the barrel of a rifle which is 2 ft . 6 in . long with a velocity of 1200 feet per second ; find the resultant force , supposed uniform , with which it was acted on in the ...
Página 41
... speed of 15 miles an hour in 3 seconds ; find the horizontal force which he applies to his own mass , supposing that he attains that speed with uniform acceleration . 7. The man in Question 6 ties a string to a mass of 5 cwt . on a ...
... speed of 15 miles an hour in 3 seconds ; find the horizontal force which he applies to his own mass , supposing that he attains that speed with uniform acceleration . 7. The man in Question 6 ties a string to a mass of 5 cwt . on a ...
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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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