Question

The mass of the moon is and the radius is $1.74 \times 10 ^ { 6 } \mathrm {~m}$. The value of gravitation force will be

• A. 1.45 N/kg
• B. 1.55 N/kg
• C. 1.75 N/kg
• D. 1.62 N/kg

Answer 1

Answer: (D)

1.62 N/kg

Answer 2

$g = \frac { G M } { R ^ { 2 } } = \frac { 6.67 \times 10 ^ { - 11 } \times 7.34 \times 10 ^ { 22 } } { \left( 1.74 \times 10 ^ { 6 } \right) ^ { 2 } } = 1.62 \mathrm {~N} / \mathrm { kg }$