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Unformatted text preview: the nickel just after the collision and (b)determine if the collision is elastic. Physics 204A THIRD EXAM Chapters 1 - 11 Spring 2007 2 3. A CD player consists of a rotating palate with a rotational inertia of 1800gcm 2 that spins at 100rpm. A CD, which can be treated as a 50.0g disk of radius 5.00cm, is dropped on to the center of this palate. Find the rotation rate of the palate and CD just after it lands. 4. A 150g meterstick is pivoted at one end. It is initially held horizontally and released from rest. Find the speed of the tip of the meterstick when it reaches the vertical. Physics 204A THIRD EXAM Chapters 1 - 11 Spring 2007 3 5. A 5.00g straw is just long enough to rest across the glass as shown. Assume the top of the glass is smooth. (a)Show the forces that act on the straw. Find (b)the weight of the straw and (c)the force exerted on the straw by the top of the cup. 12cm 7cm...
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- Fall '09