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The Earth rotates about its axis once in one sidereal day of 23 h 56 min.Calculate...

The Earth rotates about its axis once in one sidereal day of 23 h 56 min.Calculate the centripetal acceleration of a point located on the equator. Calculate the centripetal acceleration of a point located at a latitude of 45 degrees.

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Answer #1

Think why angular speed equal in both points, Reason during rotation motion of body its angular speed remain same.so I put same value of angular speed in either case .Latitude is inclination of radius with horizontal joining any point to the centre of the earth. See calculations and concepts in attached image. ( note: In part 1, point moves on a circle whose radius is equal to radius of earth try understand in figure )

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