Question

A flea stands on the end of a 1.0 cm long

Answer 1

Answer:

The rotation speed, w, is 2*pi radians/60 seconds = 0.105 rad/s and r = 0.01 m

The flea needs centripetal force given by

Fc = m*w^2/r

That force must come from friction given by

Ff = mu*N = mu*m*g

So

m*w^2/r = mu*m*g

Substitute the data, cancel the m's, and solve for mu.