How do you calculate acceleration of gravity?

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Answer 1 · 2014-06-10T11:37:23

Assume that air resistance is negligible. Equate the resultant force to the weight and then we get: $a=g$ .

We can use the simplified version of Newton's Second Law, $F=ma$ . This relates the resultant force acting on the object to its acceleration.

As air resistance is neglected the only force acting is the weight, so $F=w$ .

$w=mg$ , where $g$ is the gravitational field strength $9.8 Nkg^-1$ .

$F=mg$ , now use Newton's Second Law: $ma=mg$ . The mass is the same on both sides of the equation: $⇒a=g=9.8 ms^-2$