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Grade: 12th pass
        
if accleration of A  is    [a]   then  what  will  be the   accleration  of   B 2a  .......... or  ....... [2+ cos@]a   
   which  one is correct  and  why
 
 
answer  is   2a   by     displacement method   and [ 2+cos@]a   by  tension    method      but   which   one  
  is   correct  
3 years ago

Answers : (7)

Nicho priyatham
625 Points
							
 
u might have done some mistake
both the methods should give any1
each 1 cannot give its own answer
check trail and error 
if teta=0 u get ab=3a
if aa=90 u get ab=2a
so the ans must be (2+cos(teta))a
PLZ APPROVR IF USEFUL
n in case of any doubts ask in ans box
3 years ago
Gayatri Jayesh Bondriya
521 Points
							
but  answer  is  2a  by   displacement  method     given  in    BM. SHARMA    
AND   U  ALSO  OBSERVE  THAT  IF WEDGE  MOVES  IN  RIGHT BY    DISPLACEMENT  x    THE  ROPE  WILL BE  DISPLACED    BY   2x  AND  IN  SAME TIME  IF    BLOCK  MOVES  DOWN  WITH  y     THEN IN THAT CASE   y=2x ON DOFFRENCIATION  aB =2a
3 years ago
Gayatri Jayesh Bondriya
521 Points
							
not  doffrenciation    it  is    diffrenciation   
  on  double  diffrenciation    it   will   be  accleration
 
3 years ago
Nicho priyatham
625 Points
							
it the wedge moves by right by X then the block moves by 2X
this is ACCERLATION OF B  W.R.T  A
not wrt GROND  
but u have to  find wrt ground
3 years ago
Gayatri Jayesh Bondriya
521 Points
							
sir  means   [ 2+cos@]  a    is   the  accleration   wrt   ground    
3 years ago
Nicho priyatham
625 Points
							
yes i dont have new edtion of bm sharma but having 2012 edition in my edtion their is a similar kind of problem in concept application (excs 7.3) there is a  similar kind of problem their
here he gave solution clearly by using vector method
i dont think the ans is 2+cos@
so can u plz check it  1s
3 years ago
Gayatri Jayesh Bondriya
521 Points
							
thanks  for  help  
 
3 years ago
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  • Discussion Forum
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