The equation for the force of gravity is F=-GMm/r2 at the equator the earth has more mass due to the gravity of the sun distroting the sherical shape of the earth. But this mean that the distance between the centre of the earth to the poles (r) is less and because r is squared the effect of distance has more of an impact than the mass so this means that gravity is stronger at the poles and weaker at the equator.....
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The period of a pendulum (in seconds) is 2(pi)√(L/g), where L is the length and g is the acceleration due to gravity. As acceleration due to gravity increases, the period decreases, so the smaller the acceleration due to gravity, the longer the period of the pendulum.
Gravitational acceleration is simply acceleration due to gravity.
T=2pi(l/g)1/2
Force or weight Force= mass X acceleration gravity is an acceleration (9.8m/s2) Weight = mass X acceleration due to gravity
gravity of earth is constant in any plane but the acceleration may vary becoz of irregular plane