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2. An unknown mass is attached via string to the axle (radius 0.20 m) of wheel (radius 0.40 m). The wheel has moment of inertia 0.053 kg m2. When the system is released from rest, the mass accelerates downward at 0.10 m/s. a) What is the mass? b) How fast is the mass moving if it falls 1.0 m? Hint: use kinematics. c) What is the total kinetic energy of the system at that location? 3. Reconsider the previous scenario a) What mass is necessary to balance the wheel? b) Double the mass found in (a). What is the angular acceleration of the wheel? c) Now lets place the left mass on an incline! How much mass is necessary to balance the wheel?
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2) a w イ 0.2m RE 0.4m So, m O. 01366 2 2-***************************************************************************************************
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