A 190 g basketball has a 37.3 cm diameter and may be approximated as a thin spherical shell.
Starting from rest, how long will it take a basketball to roll without slipping 2.48 m down an incline that makes an angle of 46◦ with the horizontal? The moment of inertia of a thin spherical shell of radius R and mass m is I = 23mR2, the acceleration due to gravity is 9.8 m/s2 , and the coefficient of friction is 0.52 .
Answer in units of s.