A Turntable Has a Radius of 0

question 77

Multiple Choice

A turntable has a radius of 0.80 m and a moment of inertia of 2.0 kg · m².The turntable is rotating with an angular velocity of 1.5 rad/s about a vertical axis though its center on frictionless bearings.A very small 0.40-kg ball is projected horizontally toward the turntable axis with a velocity of 3.0 m/s.The ball is caught by a very small and very light cup-shaped mechanism on the rim of the turntable (see figure) .What is the angular velocity of the turntable just after the ball is caught?

• A)2.1 rad/s
• B)1.3 rad/s
• C)0.94 rad/s
• D)0.75 rad/s
• E)0.30 rad/s

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