Question

1. What is the centripetal acceleration of a car moving at a speed of 72 km / h on a curved road with a radius of 20 m.

2. What is the centripetal acceleration of the tips of the blades of a fan that rotates at an angular velocity of 5 rad / s, and the radius of the blades is 1m.

Answer 1

2) Here Frequency, f=601200=20Hz

and r=0.3m 

Acceleration of the particle = Centripetal acceleration

                                             =ω2r

                                             =(2πf)2r

                                             =(2∗722∗20)20.3

                                             =4733m/s2

MARK BRAINLIST