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Unformatted text preview: answer with problem 1. 3. A physics student is given a sphere and asked to determine whether it is hollow or solid. She makes a ramp 20.0cm high and lets the sphere roll from rest down the incline where she measures the final speed to be 1.53m/s. Find the type of sphere she was given. 4. A 12.0cm long pencil is balanced temporarily on its point. The mass of the pencil is 20.0g. As the pencil tips, the point of contact stays fixed. Find the speed of the center of mass just as it lands on the horizontal tabletop....
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 Fall '09
 Kagan
 Friction, Mass

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