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Grade: 12th pass
        
The masses of blocks A and B are same and equal to m. Friction is absent everywhere. Find the mgnitude of the normal force which block B presses on wall and acclerationsof blocks  A & B.
 
 
 
one year ago

Answers : (4)

Eshan
askIITians Faculty
2086 Points
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one year ago
apoorv sahu
30 Points
							
Accleration A1 and A2 are correct but as asked in question and as give in my answer booklet the value of normal force which block B presses on wall is Naw = 12mg/25.
one year ago
apoorv sahu
30 Points
							
Further correction in my above answer :
let normal force acting on block i.e on the lower block is Nb, then a new equation will be formed which will give the normal force of block B on the wall:
 
                                                                             N1=mA1
                                                                       =>  N1=12mg/25                                        ….....answer
one year ago
Eshan
askIITians Faculty
2086 Points
							Here, it has been asked the force by wall onto the block and what we have written as ‘N’ is the normal acting between the two blocks.

The normal from the wall by looking at the FBD of M1 will beN_w=Nsin37^{\circ}=\dfrac{4}{5}mg\times \dfrac{3}{5}=\dfrac{12}{25}mg
one year ago
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