Answer to Question #179199 in Mechanics | Relativity for soubhi

Question

The period of a 2 kg stone is rotated in a vertical circle on a 2 m cord with the period of 1 s.

 

Give the magnitude of the radial acceleration in m/s².

Answer 1

$a=\omega^2r,$

$\omega=\frac{2\pi}{T},$

$a=\frac{4\pi^2r}{T^2},$

$a=\frac{4\cdot 3.14^2\cdot 2}{1^2}=79~\frac{m}{s^2}.$