The mass of a spaceship is 1000 kg. It is to be launched from the earth's surface out into free space. The value of 'g' and 'R' (radius of earth) are 10 m/s 2 and 6400 km respectively. The required energy for this work will be:
Text Solution
Verified by ExpertsThe correct answer is:
D
W = 0 – 
= gR 2 × 
= mgR
= 1000 × 10 × 6400 × 10 3
= 64 × 10 9 J= 6.4 × 10 10
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