A thin uniform rectangular sign hangs vertically above the door of a shop. The sign is hinged to a stationary horizontal

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answerhappygod
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A thin uniform rectangular sign hangs vertically above the door of a shop. The sign is hinged to a stationary horizontal

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A thin uniform rectangular sign hangs vertically above the doorof a shop. The sign is hinged to astationary horizontal rod along its top edge. The mass of the signis 2.40 kg and its vertical dimensionis 50.0 cm. The sign is swinging without friction, becoming atempting target for children armed withsnowballs. The maximum angular displacement of the sign is 25.0° onboth sides of the vertical. At amoment when the sign is vertical and moving to the left, a snowballof mass 0.400 kg, travelinghorizontally with a velocity of 1.60 m/s to the right, strikesperpendicularly the lower edge of the signand sticks there.
a. What is the angular speed of the sign immediately before theimpact.b. Calculate its angular speed immediately after the impact.
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