When a ceiling fan is switched off, its angular velocity reduces to half its initial value it comple

Question

When a ceiling fan is switched off, its angular velocity reduces to half its initial value it completes 36 rotations. The number of rotations it will make further before coming to rest is (assume angular retardation to be uniform)\

Professor PC Thomas Classes · Answer

Since angular retardation is uniform ratio of angle turned is $3: 1$\