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Catalogs Discussion Forums -> Electricity -> Connection of spherical shells -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]


This much joule of heat is generated

Catalogs Discussion Forums -> Mechanics -> Find u . -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

 Average force= Area under the given curve/ total time T

Force

   

Now if anyone to involve F in the result then it can be manulated by substituting T/2 = F

Catalogs Discussion Forums -> Mechanics -> Easy projectile -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Relative velocity of ball in y-direction(Vertically upward):


Relative acceleration of ball in y-diection(Vertically downward):


Applying 

but relative height covered by ball is Zero i.e.   h=0

Hence

    Answer

Catalogs Discussion Forums -> Mechanics -> Min value of u -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 From FBD of block:



 .................................(1)

 ...............................(2)

From FBD of wedge:

..............................................(3)

Solving for a12


Length of the wedge surface 

For minimum Vo, block should stop at L


Substituting V12, L and a12 we get:

       Answer 


NOTE: I AM QUITE SURE ANSWER CAN NOT BE IDEPENDENT OF ANGLE OF T HE WEDGE

Catalogs Discussion Forums -> Mechanics -> Min value of u -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Let us make a few assumptions before solving the problem as stated below:

1. After collision the block moves along the surface of wedge with respect to it.

2. The wedge moves in horizontal direction.

Let us assume x-aixis along the surface of wedge and y-axis along normal to the surface of wedge.

From FBD of block:

  

Applying conservation of momentum along x-axis:

 ....................................(1)

Along y-axis:

....................................(2)

From FBD of wedge:

 .........................................................................(3)

Solving above equations for V12 we get

:

Once relative velocity of block with respect to wedge is found at t=0, now we will try to find Relative acceleration of block wrt wedge.

See next part of solution.

 

Catalogs Discussion Forums -> Magnetism -> Finding the magnetic field due to a current carrying conductor at a point -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 

Catalogs Discussion Forums -> Magnetism -> Finding the magnetic field due to a current carrying conductor at a point -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 

Catalogs Discussion Forums -> Magnetism -> Finding the magnetic field due to a current carrying conductor at a point -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 dy/dx = 2/y .................(1)

r=(1-x)i -y j 

Putting all values r , dl etc we get

Integrating dB , x=0 , x= infinity and multiplying the result by 2 we get

      

Catalogs Discussion Forums -> Mechanics -> plz solve this problem -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 tan@=y/x

x=yCot@

a=gCot@  Answer

Catalogs Discussion Forums -> Mechanics -> Relative motion -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 

now put the value r0

Catalogs Discussion Forums -> Mechanics -> Relative motion -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 

now put the value r0

Catalogs Discussion Forums -> Mechanics -> Relative motion -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 

now put the value r0

Catalogs Discussion Forums -> Mechanics -> Friction -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Let a1 is acceleration of block-1 and block-3 and a2 is acceleration of block-2.

From FBD:

Solving above equations for a1 and a2 we get:

Distance travelled by Block-1:

Distance travelled by Block-2:  

But  

Hence 

Catalogs Discussion Forums -> Mechanics -> Collisions -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Sorry I foregot that mass of B is M, just replace m by M of Vbx in equation (2) and solve

Catalogs Discussion Forums -> Electricity -> solve it??????? -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Let they are placed r meter apart,

F=kq1(q-q1)/r^2

dF/dq1= k(q-2q1)/r^2 =0 for F maximum

Hence q1/q= 0.5  Ans

Catalogs Discussion Forums -> Mechanics -> Collisions -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Let the velocity of sphere A is V0 before impact , Vax and Vay are the X and Y components of Sphere-A after impact. Vbx is velocity of Sphere B after ipmact. Since there is no impulsive force along Y-axis, hence Velocity in Y-direction is not affected at all(Since balls are smooth).

Apllying conservation of Linear momentum along x and y axis:

   ............................(1)

   .........(2)

  ......................(3)

Solve above equations for Vbx

we get            Ans

Catalogs Discussion Forums -> Mechanics -> Min value of u -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Fundamental mistake by Anitha is "Conservation of Energy" Here its an inelastic collision, hence energy is niever conserved. Secon mistake is the assumtion that verticle component of velocity is zero. If verticle component is zero how the smaller block will reach the height h.

Catalogs Discussion Forums -> Mechanics -> rotation -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 INFORMATION IS INCOMPLETE. FIRST WHETHER TUBE IS IN VERTICLE PLANE, WHAT IS R. PLEASE ENCLOSE FIGURE.

Catalogs Discussion Forums -> Mechanics -> Min value of u -> Go to message
This Post 0 points    (Olaaa!! Perrrfect answer.   in 0 votes )   [?]

 Mr Anirban is my answer is correct?? I hope it must be correct.

Catalogs Discussion Forums -> Electricity -> CKT -> Go to message
This Post 5 points    (Olaaa!! Perrrfect answer.   in 1 votes )   [?]

 Let us apply Kirchoff's loop(current) law and assume all current is flowing from positive to negative terminals. Since C1 and C4 are parallel to voltage source , hence voltave across them are 20V and 10V respectively.

Since current through C2 and C3 are equal hence:

   .........................(1)

 ..................(2)

Solving above equations

Vc3=3V

Vc2=7V

Vab=Vc4+Vc2= 17V   Ans

 
 
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