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Mechanics
25 Mar 2007 11:38:04 IST
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58
9996
formulas!!!!!!!!!!!!
None
here are some shortcuts to find ............... in motion in 1 dimension 1) to find the vel. in b/w the distance travelled V1 = {v2 + (v2 - u2/n)}1/2 2) a bullet is fired with certain vel. into a block of wood . it loses 1/nth of its initial speed after travelling a dist. x in the block . determine the total dist. penetrated by it before coming to rest.... ans) x' = {N2/ 2n - 1} x &nbs
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vir sharma
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Joined: 17 Feb 2007
Posts: 162
26 Mar 2007 13:42:02 IST
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gr8 goin man
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(#g/l) where l is the length of the rod....
4 Aug 2007 07:33:48 IST
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acceleration of a system of bodies.
a =
force/ mass ....forces not including tension n normal reaction
eg.
2 masses attached on either sides of a massless pulley,
force = m1g - m2g ,
mass =m1 +m2
a= m1g - m2g/m1 +m2
also applicable in rotation,
a = force/ mass
in case of a pulley wid moment of inertia = I &radius r
mass of pulley is taken as I/r2
a = (m1g - m2g)/m1 +m2 + I/r2
a =
force/ mass ....forces not including tension n normal reactioneg.
2 masses attached on either sides of a massless pulley,
force = m1g - m2g , mass =m1 +m2a= m1g - m2g/m1 +m2
also applicable in rotation,
a =
force/ massin case of a pulley wid moment of inertia = I &radius r
mass of pulley is taken as I/r2
a = (m1g - m2g)/m1 +m2 + I/r2
5 Aug 2007 20:24:06 IST
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2 masses attached at the ends of a spring, of stiffness = k
transform d case into a one mass & spring system,
spring constant(k) remains same; the massof the new block taken as
1/
= 1/m1 + 1/m2
or
=m1m2/m1 + m2
useful in solving shm, centre of mass & work, power energy probs.
transform d case into a one mass & spring system,
spring constant(k) remains same; the massof the new block taken as
1/
= 1/m1 + 1/m2 or
=m1m2/m1 + m2 useful in solving shm, centre of mass & work, power energy probs.
6 Aug 2007 19:40:40 IST
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projectile is at sum ht fr 2 timings sum of wich is time of flight
explanation.....well here the projectile is at same height fr 2 same times (a and b)
so time of light of o to a + time of flight frm o to b = total tym of flight...
(( o is the starting pt)
hope u got it now
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