A thin spherical shell sphere starts from rest and rolls without slipping down the ramp toward the left as shown in the figure. The height h = 1000 centimetres. The ball's mass is m=2 kg and its radius is R=4 centimetres. What is the
ball's final centre of mass speed? (g=10 m/s2 and Ishell = | MR?)​

Answer: fn = wcos50 = 38.89(9.81)(cos50) = 245.23 n

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