Two uniform solid balls, Ball A and Ball B, roll down the same incline without slipping from the rest. Ball A is twice as massive but only a third in radius as Ball B (i.e. mA=2mB, rA=1/3 rB) . How to compare the time it takes for the two balls to roll down? (ignore air friction) (Hint: you may or may not need these: I=2/5 MR2 for a uniform solid sphere, Volume = 4/3πr3 for a sphere).
a. ta=2tb b. tb=2ta c. tb=ta d. none of the above is correct but ta > tb e. none of the above is correct but ta
