Question

The angle of friction between two surfaces is 37 degrees.if cos 37=4/5,coefficient of static friction between those two surfaces is

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