The distance between centre of the earth and moon is 384000 km. If the mass of the earth is 6
The distance between centre of the earth and moon is 384000 km. If the mass of the earth is 6 ×1024 kg and G = 6.66 × 10-11Nm2/kg2. The speed of the moon is nearly
(a) 1 km/sec (b) 4 km/sec
(c) 8 km/sec (d) 11.2 km/sec
Answer: a
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(a) – 5 J (b) – 10 J (c) – 15 J (d) – 20 J Answer-a