The value of g on the earth’s surface is 980 cm /sec2 . Its value at a height of 64 km from the earth’s surface is
(a) 960.40 cm/sec2 (b) 984.90 cm/sec2
(c) 982.45 cm/sec2 (d) 977.55 cm/sec2
(Radius of the earth R = 6400 kilometers)
Answer: a
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a