Question

a thrust has contact surface 20 cm. external diameter and 15 cm . internal diameter the co-efficient of friction is 0.08 .the total axial load is 300kg/cm calculate the no of collars and h.p lost the friction in 420 rpm​

Answer 1

$\huge\boxed{\fcolorbox{cyan}{red}{Hi mate!}}$

Refer to the attachment

Answer 2

Step-by-step explanation:

30 lg cm2 is the correct answer