A coin kept on a horizontal rotating disc has its Centre at a distance of 0.1 m from the axis of the rotation of the disc. If the coefficient of friction between the coin and disc is 0.25, find the angular speed of the disc at which the coin would be about is slip off.

A coin kept on a horizontal rotating disc has its centre at a distance of 0.25 m from the axis of rotation of the disc. If mu is 0.2, then the angular velocity of the disc at which the coin willslip off, is

A coin just remains on a disc rotating at 120 r.p.m. when kept at the distance of 1.5 cm from the axis of rotation. Find the coefficient of friction between the coin and the disc.

A body is kept on a horizontal disc of radius 2 m at a distance of 1 m from the centre . The coefficient of friction between the body and the surface of disc is 0.4. The speed of rotation of the disc at which the body starts slipping is (g=10 m//s^2 )

A car is moving along a straight horizontal road with a speed v_(0) . If the coefficient of friction between the tyres and the road is mu , the shortest distance in which the car can be stopped is

A coin is placed on a rotating platform at distance V from its axis of rotation.To avoid the skidding of coin from rotating platform, the maximum angular velocity omega is

A bend in a level road has a radius of 100 m Find the maximum speed which a car turning this bend may have without skidding if coefficient of friction between the tyres and the road is 0 .8 S .

A small coin is kept at the rim of a horizontal circular disc which is set into rotation about verticle axis passing through its centre. If radius of the disc is 5 cm and mu_(s)=0.25 , then the angular speed at which the coin will just slip off at

A coin placed on a gramophone record rotating 100/3 rpm flies off when it is placed at a distance greater than 16 cm from the axis of rotation, if the gramophone record is rotating at 200/3 then its distance from the axis of rotation is

A long horizontal rod has a bead which can slide along its length and initially placed at a distance L from one end A of the rod. The rod is set in angular motion about A with constant angular acceleration alpha. if the coefficient of friction between the rod and the bead is mu , and gravity is neglected, then the time after which the bead starts slipping is

A coin placed on a rotating table just slips when it is placed at a distance 4 r from the centre, on doubling the angular velocity of the table, the coin will just slip now the coin is at a distance from centre is