Question

A right circular cone with semi vertical angle 'a' rest on a rough inclined plane. As angle of inclination q increases, cone will slides before it topples over if coefficient of friction

• A. m< tan a
• B. m< $\frac { 3 } { 4 }$ tan a
• C. m< 4 tan a
• D. m< $\frac { 4 } { 3 }$ tan a

Answer 1

Answer: (C)

m< 4 tan a

Answer 2

tan^–1 m < q

̃ m < $\frac { 4 \mathrm { r } } { \mathrm { h } }$

\ m < 4 tan a