Question

a coin is placed on a rotating turntable just slips if it is placed at a distance of 4 cm from the centre if the angular velocity of the turntable is doubled it will just slip at a distance of

Answer 1

Answer:

3cm

Explanation:

r=4cm

F=mw²r

r'=4-x

compare 1 and 2

mw²'r=mw²r

m4w²(4-x)=mw²4

x=3 cm