Mech 3. Sphere. PLEASE help...... A particle of mass m slides down a fixed, frictionless shpere of radius R, starting from rest at the top. (a) in terms of m, g, R, and (theta), determine each of the following for the particle while it is sliding on the sphere. i. the Kinetic energy of the particle ii. the centipetal acceleration of the mass (would you still use Ac=v^2/r?) iii. The tangential acceleration of the mass (What's this?) (b) determine the value of (Theta) at which the particle leaves the sphere.