Question: (a) What is the angular speed to about the polar axis of a point on Earth's surface at a latitude of 65 N? (Earth rotates

(a) What is the angular speed to about the polar axis of a point on Earth's surface at a latitude of 65 N? (Earth rotates about that axis.) (b) What is the linear speed v of the point? What are (c) (u and (d) vfor a point at the equator? (Note: Earth radius equals 6370 km and let one day be 24 hours) (a) Number l Units (b) Number a Units {D {D {D (c) Number a Units {D (d) Number a Units In the gure, wheel A of radius rA = 12.1 cm is coupled by belt 8 to wheel C of radius rc = 27.9 cm. The angular speed of wheel A is increased from rest at a constant rate of 2.88 rad/52. Find the time needed for wheel Cto reach an angular speed of 142 rev/min, assuming the belt does not slip. (Hint: If the belt does not slip, the linear speeds at the two rims must be equal.) Number I Units A V

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