1, A rubber ball with radius of .o32m rolls along the horizontal surface of a ta

Question

1, A rubber ball with radius of .o32m rolls along the horizontal surface of a table with a constant linear speed v. When the ball rolls off the edge of the table, it falls .66m to the floor below. If the ball completes 0.37revs during its fall, what was its linear speed?



2, After you pick up a spare, your bowling ball rolls without slipping back toward the ball rack with a linear speed of 2.85 m/s. To reach the rack, the ball rolls up a ramp that rises through a vertical distance o.53m. a, What is the linear speed of the ball when it reaches the top of the ramp? If the radius of the ball were increased, would the speed found in part (a) increase, decrease, or stay the same? Explain.

Explanation / Answer

Radius of the rubber ball is r = 0.032 m

height h = 0.66 m

     t = 2gh

         = 2 *9.8* 0.66m

        = 3.59 s

    = / t

          = 0.37 rev / 3.59 s

         = 2.32 rad / 3.59 s

        = 0.64 rad/s

    v = r

      = 0.032 m * 0.64 rad /s

      = 0.020 m/s

2 part of the question is not clear.

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