Q. In a band and block brake, the ratio of tensions on tight side and slack side of the band is (where $$\mu $$ = Coefficient of friction between the blocks and the drum, $$\theta $$ = Semi-angle of each block subtending at the center of drum and n = Number of blocks)
✅ Correct Answer: (D)
T
1
T
2
=
(
1+μtanθ
1−μtanθ
)
n