please explain me the formula for calculating accceleration due to gravity in a very simple way.
Asked by ayushikas | 21st Nov, 2009, 09:59: AM
The acceleration of gravity due to a planet with mass M and radius R is given by
g = GM/R2
which we get by simple equating the weight mg to the gravitational force given by Newton's Law.
The above expression shows us that g is constant on the surface of the planet. We can simply plug in the values of G, M and R to find the value of g or we can find it.
Since g is constant we can do simple experiment, in which we'll drop a ball from a tall building/mountain of height H, and measure the time when it hits the ground.
H = ut + gt2/2
which gives g = 2H/t2
Answered by | 21st Nov, 2009, 01:36: PM
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