At what maximum height with respect tothe lowest point of a hollow sphere of radius r can a particle stay at rest inside it? Given the coefficient of friction between the sphere and the particleis mu.

At what maximum height with respect tothe lowest point of a hollow sph

1.	At what maximum height with respect tothe lowest point of a hollow sphere of radius r can a particle stay at rest inside it? Given the coefficient of friction between the sphere and the particleis mu.
Answer» SOLUTION :Let m = mass of the particle, h =AC = maximum height of the point B where the particle can stay at REST Fig. Normal force of the shpere on the particle, R = mg COS `theta` = component of the particle.s weight in the radial direction.