A motorcyclist rides in a horizontal circle along the inner wall of cylindrical chamber of radius r. If the coefficient of friction between the tyres and the wall of is `mu`, the minimum angular speed to prevent him from sidding down is

A car is taking turn on a circular path of radius R. If the coefficient of friction between the tyres and road is mu , the maximum velocity for no slipping is

A car is taking turn on a circular path of radius R. If the coefficient of friction between the tyres and road is mu , the maximum velocity for no slipping is

A motor cyclist is to undertake horizontal circles inside the cylindrical wall of a well of inner radius 4m . Coefficient of static friction between the tyres and the wall is 0.4. Calculate the minimum speed and frequency necessary to perform this stunt.

A car is travelling along a curved road of radius r. If the coefficient of friction between the tyres and the road is mu the car will skid if its speed exceeds .

In a 'well of death' a ride drives round the inner wall of a hollow cylindrical chamber of siameter 20 m .If the coefficient of force friction between tyres and inner wall of a hollow cylinder is 0.5, then the minimum speed of the rider without sliding down will be

In a 'well of death' a rider drivesround the inner wall of a hollow cylindrical chamber of diameter 20 m. If the coefficient of force of friction between tyres and inner wall of the hollow cylinder is 0.5, then the minimum speed of the rider without sliding down will be

The maximum speed of car which can be safely driven along a curve of radius 10 m , if the coefficient of friction between the tyres and the road is 0.5, is

A person stands in contact against the inner wall of a rotor of radius r. The coefficient of friction between the wall and the clothing is mu and the rotor is rotating about vertical axis. The minimum angular speed of the rotor so that the person does not slip downward is