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16. A uniform cylinder made of clay with radius r₁ is on a horizontal, frictionless surface and at angular speed w₁ around a vertical axis through its center. A second horizontal, frictionless object then begins to press down on the cylinder untils height has been halved. After this process, what angular speed does the cylinder rotate at? A) √√2 B) @0₁ 2 C) √2a D) @₂₁ 4 E) @₁

16. A uniform cylinder made of clay with radius r₁ is on a horizontal, frictionless surface and at angular speed w₁ around a vertical axis through its center. A second horizontal, frictionless object then begins to press down on the cylinder untils height has been halved. After this process, what angular speed does the cylinder rotate at? A) √√2 B) @0₁ 2 C) √2a D) @₂₁ 4 E) @₁

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16. A uniform cylinder made of clay with radius r₁ is on a horizontal, frictionless surface and at angular speed w₁ around a vertical axis through its center. A second horizontal, frictionless object then begins to press down on the cylinder untils height has been halved. After this process, what angular speed does the cylinder rotate at? @₁ A) √2 B) 2 C) √2a D) @₁ 4 E) 00₁
Transcribed Image Text:16. A uniform cylinder made of clay with radius r₁ is on a horizontal, frictionless surface and at angular speed w₁ around a vertical axis through its center. A second horizontal, frictionless object then begins to press down on the cylinder untils height has been halved. After this process, what angular speed does the cylinder rotate at? @₁ A) √2 B) 2 C) √2a D) @₁ 4 E) 00₁
20. An airplane makes a gradual 135° turn; the plane was flying at a 200 m/s at the start of the turn and 300 m/s at the end of the turn. The process takes 40 seconds to complete. If the plane's mass is 6,000 kg, what was the magnitude of the average net force acting on the plane over this interval (to two significant figures)? A) 1.5 × 104 N B) 5.4 x 104 N C) 6.2 × 104 N D) 7.0 × 104 N X E) 3.2 × 104 N
Transcribed Image Text:20. An airplane makes a gradual 135° turn; the plane was flying at a 200 m/s at the start of the turn and 300 m/s at the end of the turn. The process takes 40 seconds to complete. If the plane's mass is 6,000 kg, what was the magnitude of the average net force acting on the plane over this interval (to two significant figures)? A) 1.5 × 104 N B) 5.4 x 104 N C) 6.2 × 104 N D) 7.0 × 104 N X E) 3.2 × 104 N
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