# The minimum and maximum distances of a satellite from the centre of the earth are 2R and 4R respectively,

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The minimum and maximum distances of a satellite from the centre of the earth are 2R and 4R respectively, where R is the radius of earth and M is the mass of the earth. Find

(a) its minimum and maximum speeds,

(b) radius of curvature at the point of minimum distance.

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(a) Applying conservation of angular momentum

(b) If r is the radius of curvature at point A