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A block A of mass \( 2 \mathrm{~kg} \) is placed over another block B of mass \( 8 \mathrm{~kg} \) and supported by a ledge
\( \mathrm{P} \)
\( \mathrm{L} \) fixed on block B on its smooth surface as its
W extended part. If a force \( \mathrm{F}=100 \mathrm{~N} \) is applied on
block B, it starts moving on rough horizontal
surface. Find the force exerted by block B on A
if frictional force between block B and ground
is \( 25 \mathrm{~N} \). (Take \( g=10 \mathrm{~m} / \mathrm{s}^{2} \) )
(1) \( 15 \mathrm{~N} \)
(2) \( 20 \mathrm{~N} \)
(3) \( 25 \mathrm{~N} \)
(4) \( 35 \mathrm{~N} \)
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