A circular disk of radius 0.100 m, is rotating at a constant angular speed about an axis that is perpendicular to the disk at its center. Determine the ration of the centripetal acceleration at a point A, on the circumference, to that at point B, located 0.0700 m from the center.

Question

anonymous · Answer

if a particle rotates in a circle of radius r with uniform velocity v its centripetal acceleration is given by a=v^2/r and this acceleration is directed towards the center of the circle.
now try solving the question yourself

anonymous · Answer

thank you

anonymous · Answer

so what answer did you get?

anonymous · Answer

I'm doing it now

anonymous · Answer

I don't know what the constant is

anonymous · Answer

in terms of angular velocity centripetal acc is a=(W^2)*r if W is the angular speed
u don't have to worry about that,it will get cancelled once u take the ratio

anonymous · Answer

r for A=0.1m and for B it is 0.07
so when u take the ratio of their cpt acc u get|dw:1335650143758:dw|