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There is a bicycle wheel resting against a small step whose height is h = 0.132 m. The weight and radius of the wheel are W =
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The model airplane is being spun at a speed of 20 m/s on a horizontal circle of radius 17 m. The mass of the plane is 0.86 kg.
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In 2.0 minutes, a ski lift raises 5 skiers at constant speed to a height of 190 m. The average mass of each skier is 65 kg. What
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