Question

A fan is rotating with w= 100 rad/s is shattered of. After 2n ration it's angular velocity becomes 50rad/sec find angular velocity after n rotation

Answer 1

$\huge\mathfrak{\bf{\underline{\underline{\blue{Answer \ :}}}}}$

In this case, the initial angular velocity of the fan is ω

0

=0 and the final angular velocity of the fan is ω=100rev/sec.

The total number of revolutions before the fan coming to stop is calculated as follows.

θ=(

2

ω+ω

0

)t=(

2

100+0

)×(5×60)=15,000rev

Hence, the total number of revolution made before it stops is 15,000rev.