The earth s gravitational field intensity at it... - JAMB Physics 2019 Question
The earth's gravitational field intensity at its surface is about
(G = 6.7 × 10\(^{-11}\)Nm\(^2\)/kg\(^2\), mass of the earth is 6 × 10\(^{24}\)kg, radius of the earth is 6.4 × 10\(^6\)m, g on the earth = 9.8m/s\(^2\))
A
6.7N/kg
B
7.9N/kg
C
8.0N/kg
D
9.8N/kg
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Correct Option: D
| E | = | F
m | = | GMm/d\(^2\)
m | = | GM
d\(^2\) |
| E | = | 6.7 × 10\(^{-11}\) × 6 × 10\(^{24}\)
(6.4 × 10\(^6\))\(^2\) | = | 9.8N
kg |
E = g
g = 9.8N/kg
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