The value of acceleration due to gravity at
earth's surface is 9.8 . The altitude
above its surface at which the acceleration
due to gravity decreases to 4.9 , is
close to : (Radiuas of earth = 6.4 x m)
2.6 X m
6.4 x m
9.0 x m
1.6 x m
Acceleration due to gravity (g) -
Force extended by earth on a body is gravity.
Formula:
gravity
density of earth
Radius of earth
- wherein
It's average value is on the surface of earth
Variation in 'g' with height -
gravity at height from surface of earth.
Radius of earth
height above surface
- wherein
=>
=>
=>
=>
=>
=>
Option 1)
2.6 X m
Option 2)
6.4 x m
Option 3)
9.0 x m
Option 4)
1.6 x m
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