Question

A ceiling fan has a diameter of the circle through the outer edges of the three blades of $120$ cm and rpm $1500$ at full speed consider a particle of mass $1$ g sticking at the outer end of a blade. Then force is?

Answer 1

diameter $=120cm$. hence radius(r)$=60cm.=.6m$,

RPM stands for revolution per minute which is equal to $1500$

hence, one revolution $=2\pi$.

So, for 1500 revolution ,angular frequency $\omega =1500\times \frac{2\pi }{60}$ rad/s.

the force experienced by the particle

So, force by putting value of m,r and ω is $14.804N$