Question

a stone tied to the end of 20cm long string in horizontal circle if centripetal acceleration is 9.8 then angular speed in rad per second will be what​

Answer 1

Answer:

Given that Radius of  horizontal circle R = 0.20 m.  

Centripetal acceleration = ac​=9.8m/s2.  

Angular speed =ω=?

As we know that centripetal acceleration = ac​=rω2

       9.8 = 0.20 * ω²

        ω = 7 rad/sec.

Explanation:

Answer 2

A stone tied to the end of a 20 cm long string is whirled in a horizontal circle. If the centripetal acceleration is 9.8m/s^2, its angular speed in rad/sec is 1. 22/72.Oct 23, 2017