College Physics (7th Edition)

Coefficient of static friction $=0.65$, Angle of inclined plane $=20^{\circ}$ The crater will slide if only $mgsin20^{\circ}>F_{s}$ Now, $F_{s}=0.65\times mg$ Again, $mgsin20^{\circ}=0.342 \times mg$ From above, it is obvious that $mgsin20^{\circ}$.
Coefficient of static friction $=0.65$, Angle of inclined plane $=20^{\circ}$ The crater will slide if only $mgsin20^{\circ}>F_{s}$ Now, $F_{s}=0.65\times mg$ Again, $mgsin20^{\circ}=0.342 \times mg$ From above, it is obvious that $mgsin20^{\circ}$.