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Physics-

General

Easy

Question

Two blocks A and B placed over an inclined plane of inclination $alpha$ have masses m and M. The coefficients of friction between bodies and plane are respectively $mu subscript 1 end subscript$ and $mu subscript 2 end subscript.$ Find the minimum value of $alpha$ at which the blocks start moving if $mu subscript 1 end subscript greater than mu subscript 2 end subscript.$

$\tan α = \frac{μ_{1} m + μ_{2} M}{(M + m)}$
$\sin α = \frac{μ_{1} m + μ_{2} M}{(M + m)}$
$\cos α = \frac{μ_{1} m + μ_{2} M}{(M + m)}$
$\cot α = \frac{μ_{1} m + μ_{2} M}{(M + m)}$

The correct answer is: $tan invisible function application alpha equals fraction numerator mu subscript 1 end subscript m plus mu subscript 2 end subscript M over denominator open parentheses M plus m close parentheses end fraction$

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