Question

The coefficient of friction between a body and ground is 1/√3 then

(A) The angle of friction can vary from 60
to 90

(B) The angle of friction can vary from 0
to 30

(C) The angle of friction can vary from 0
to 60

(D) The angle of friction can be vary from 30 to 90
(p.s the answer is part B) i need the explanation )
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Answer 1

(A) The angle of friction can vary from 60

to 90

Answer 2

Answer:

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Angle of friction = Angle of repose. tanФ= μ. Ф= 30 degrees.

Angle of friction = Angle of repose. tanФ= μ. Ф= 30 degrees.

Angle of friction = Angle of repose. tanФ= μ. Ф= 30 degrees.