A small objective placed on a rotating horizontal turn table just slips when it is placed at a distance 4cm from the axis of rotation. If the angular velocity of the trun-table doubled, the objective slip when its distance from the axis of ratation is.

Options

A. 1 cm
B. 2 cm
C. 4 cm
D. 8 cm

Answer

A

Explanation

`W_(1)^(2) r_(1) = W_(2)^(2) r_(2) :. R_(2) = 1cm`