A motor cyclist (as a particle ) is undergoing vertical circles inside a sphere of death . The speed of the motorcycle varies between 6m/s and 10 m/s. Calculate diameter of the sphere of death. How much minimum values are possible for these two speeds ?

A motorcyclist (as a particle) is undergoing vertical circles inside a sphere of death. The speed of the motorcycle varies between 6 ms^-1 and 10 ms^-1 Calculate diameter of the sphere of death . How much minimum value are possible for these two speed?

A motor cyclist rides in a vertical circle in a hollow sphere of 3m. Find the minimum speed required so that he does not lose contact while the sphere at the highest point.

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.

During a stunt a cyclist ( considered to be a particle is undertaking horizontal circles inside a cylindrical well of radius 6.05m. If the necessary friction coefficient is 0.5, how much minimum speed should the stunt artist maintain? Mass of the artist is 50kg. If she / he increases the speed by 20% how much will the force of friction be? (Use g = 10ms^2)

During a stunt, a cyclist (considered to be a particle) is undertaking horizontal circles inside a cylindrical well of radius 6.05 m. If the necessary friction coefficient is 0.5, how much minimum speed should the stunt artist maintain ? Mass of artist is 50 kg . If she/ he increses the speed by 20%, how much will the force of friction be ?

A motorcyclist rides along a horizontal circle on the vertical cylindrical wall of a metal cylinder. The radius of the cylinder is 10 m. If the speed is 20 m//s and acceleration due to gravity is10 m//s^2 , then the least value of the coefficient of friction will be,