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Question

Two blocks are kept in contact as shown in figure. Find forces exerted by surfaces (floor and wall) on blocks.
301475_03dfde922d88417cabff65f53c812dff.png

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Solution

From free body diagram we conclude that
Net forces in x direction+Y direction is zero.
Also we know that
N2=100 N
& N1=10×g=100 N
On balacing the net forces in x direction
N4=N2=100 N [=N2=100 N]
N4+253=N2
Similarly for Y direction we get
N4+253=100
N4=100253
N4=56.75N
Also we know that
N3=20g+25
N3=200+25
N3=225 N
Therefore forces exterted on the surfaces are
N1=100 N,N3=225 N
N4=56.75 N

1932618_301476_ans_3cfb148ec3ff4b5e865edb7c499fd713.png

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