a block A kept on inclined surface begins to slide if inclination is 30 degrees.block A is replaced by another block B.and it is found that it just begins to slide if inclination is 40 deg. then----a)mass of A>mass of B b)mass of A

Dear tushar

Equation of motion for Block A is when it just atart sliding

m_ag sin30 -μ_am_agcos30=0

sin30 -μ_acos30=0............1

Equation of motion for Block B is when it just atart sliding

m_bg sin40 -μ_bm_bgcos40=0

sin40 -μ_bcos40=0............2

clearly these equation does not depends upon mass of block so all three condition can be possibel

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