Q132
Which of the following relationships between co-efficinet of friction (μ) between rock & roll and a (half of the angle of nip) of the particle to be crushed is correct ?
A.
Μ > tan α
B.
Μ ≥ tan α
AnswerC.
Μ > tan 2α
D.
Μ ≤ tan α
Answer: Option B
Solution
Answer: Option B
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