Doubt from mechanics



Q10 I got option AC but answer key says ACD.
Q13 Answer given is CD how???
@Shwetanshu_2018 @pratyaksh_2019

about cos\theta= \dfrac{2}{3} inner ring will give normal rexn then out ring draw fbd in both instant u will see option c nd d option

#3


can give you idea..

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