Ahollow spherical shell with mass 2.00kg rolls without slipping down a slope that makes an angle of 40.0^\circ with the horizontal. find the magnitude of the acceleration a_cm of the center of mass of the spherical shell. find the magnitude of the frictional force acting on the spherical shell.

Explanation:

The sum of torque on the sphere is:

Solving for a:

Now, the sum of forces will be:

Solving for Ff:

Ff=-6.42N    The negative sing tells us that it actually points downwards.

the entire statement is true and correct.  

there's no diagram, nothing is illustrated, and no question is asked.

0.11 m/s and 0.28 m/s should be correct