At what height over the earth’s pole, the free fall acceleration decreases by one percent (assume the radius of earth to be 6400 km)
(a) 32 km (b) 80 km
(c) 1.253 km (d) 64 km
Answer: a
(8)
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a (123)