Question

The angle of friction between two surface is 37°. If cos 37°=4/5 coefficient of friction between two surfaces is P/4,then p=____.
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Answer 1

Answer:

mu= tan thita

mu = tan 37= sin 37/cos37

sin 37= √ 1- cos^2 (37)= √1-16/25= √9/25= 3/5

so...mu= (3/5)/(4/5)= 3/4