Question

Question #e9a9e

Answer 1

Option (1)

Explanation:

Given tha the length of the cylindrical shaped artificial sattelite is 20 m and it is rotating about an axis which is perpendicilar bisector of the axial length (20m) of the satellite.So the radius of rotation is `r=10m`. If w is the angular velocity of rotation then the centrifugal acceleration produced due to this rotation will creat artificial gravity `4.9m/s^2`

So we can write

`"Centrifugal acceleration "=w^2*r=4.9`

`=>w^2*10=4.9=>w^2=0.49=>w=0.7`

`2pixxn=0.7`,where n = frequency of rotation

`:.n=0.7/(2*pi)~~0.1Hz`