A block A kept on an inclined surface just begins to slide if the inclination is 30 ∘ . The block is replaced by another block B and it is found that it just begins to slide if the inclination is 40 ∘

Question

A block A kept on an inclined surface just begins to slide if the inclination is 30 ∘ . The block is replaced by another block B and it is found that it just begins to slide if the inclination is 40 ∘ :

TestHub · Accepted Answer

The angle of repose satisfies tan θ = μ s ​ which is independent of mass. The two angles tell us μ A ​ = tan 30 ∘ and μ B ​ = tan 40 ∘ nothing about the masses, so any mass relation is possible. Option D.

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