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tempting target for children armed with snowballs. The sign is released from rest from a position that makes a 25,0° angle from the vertical. Assume it swings freely with no air resistance. At a moment when the sign is vertical and moving to the left, a snowball of mass 400 g, traveling horizontally with a velocity of 160 cm/s to the right, strikes perpendicularly the

tempting target for children armed with snowballs. The sign is released from rest from a position that makes a 25,0° angle from the vertical. Assume it swings freely with no air resistance. At a moment when the sign is vertical and moving to the left, a snowball of mass 400 g, traveling horizontally with a velocity of 160 cm/s to the right, strikes perpendicularly the

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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 rod along its top edge. The mass of the sign is 2.40 kg and its vertical dimension is 50.0 cm. The sign is swinging without friction, becoming a tempting target for children armed with snowballs. The sign is released from rest from a position that makes a 25,0° angle from the vertical. Assume it swings freely with no air resistance. At a moment when the sign is vertical and moving to the left, a snowball of mass 400 g, traveling horizontally with a velocity of 160 cm/s to the right, strikes perpendicularly the lower edge of the sign and sticks there. a) Calculate the angular speed (WB) of the sign at the lowest part of the swing (just before the snowball hits the sign). b) Calculate its angular velocity (magnitude and direction) of the system immediately after the impact of the snowball. Take ccw is positive and cw is negative.
Transcribed Image Text:A thin, uniform, rectangular sign hangs vertically above the door of a shop. The sign is hinged to a stationary horizontal rod along its top edge. The mass of the sign is 2.40 kg and its vertical dimension is 50.0 cm. The sign is swinging without friction, becoming a tempting target for children armed with snowballs. The sign is released from rest from a position that makes a 25,0° angle from the vertical. Assume it swings freely with no air resistance. At a moment when the sign is vertical and moving to the left, a snowball of mass 400 g, traveling horizontally with a velocity of 160 cm/s to the right, strikes perpendicularly the lower edge of the sign and sticks there. a) Calculate the angular speed (WB) of the sign at the lowest part of the swing (just before the snowball hits the sign). b) Calculate its angular velocity (magnitude and direction) of the system immediately after the impact of the snowball. Take ccw is positive and cw is negative.
| 25° WA=0 We=?
Transcribed Image Text:| 25° WA=0 We=?
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