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Gravitation question

2023 · 11 Apr · Shift 2 · Q56
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Gravitation question

2023 · 11 Apr · Shift 2 · Q56

JEE MainPhysicsGravitationMCQ+4 / −1
A space ship of mass 2×104 kg2 \times 10^{4} \mathrm{~kg}2×104 kg is launched into a circular orbit close to the earth surface. The additional velocity to be imparted to the space ship in the orbit to overcome the gravitational pull will be (if g=10 m/s2g=10 \mathrm{~m} / \mathrm{s}^{2}g=10 m/s2 and radius of earth =6400 km=6400 \mathrm{~km}=6400 km ):
  1. A
    7.9(2−1)km/s7.9(\sqrt{2}-1) \mathrm{km} / \mathrm{s}7.9(2​−1)km/s
  2. B
    11.2(2−1)km/s11.2(\sqrt{2}-1) \mathrm{km} / \mathrm{s}11.2(2​−1)km/s
  3. C
    7.4(2−1)km/s7.4(\sqrt{2}-1) \mathrm{km} / \mathrm{s}7.4(2​−1)km/s
  4. D
    8(2−1)km/s8(\sqrt{2}-1) \mathrm{km} / \mathrm{s}8(2​−1)km/s
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