Question

The gravitational field intensity at a point 10,000 km from the centre of the earth is The gravitational potential at that point is

• A. $- 4.8 \times 10 ^ { 7 } \mathrm {~J} \mathrm {~kg} ^ { - 1 }$
• B. $- 2.4 \times 10 ^ { 7 } \mathrm {~J} \mathrm {~kg} ^ { - 1 }$
• C. $4.8 \times 10 ^ { 6 } \mathrm {~J} \mathrm {~kg} ^ { - 1 }$
• D. $3.6 \times 10 ^ { 6 } \mathrm {~J} \mathrm {~kg} ^ { - 1 }$

Answer 1

Answer: (A)

$- 4.8 \times 10 ^ { 7 } \mathrm {~J} \mathrm {~kg} ^ { - 1 }$

Answer 2

Gravitational field intensity,

Gravitational potential,

Or