To compute weight, multiply mass by C) 9.8 m/s/s
Explanation:
The force of gravity acting on an object near Earth's surface, also called weight of the object, is given by
[tex]W=mg[/tex]
where
m is the mass of the object
g is known as acceleration of gravity, and its value near the Earth's surface is [tex]9.8 m/s^2[/tex]. It represents the value of acceleration at which an object in free fall (=acted upon gravity only) falls down near the Earth's surface, regardless of its mass.
It must be noted that although the mass of an object is constant, since its mass is an intrinsec property of the object, the weigth is not constant (because the value of g changes on different planets, for instance).
Therefore, from the formula, we see that in order to compute weight, we have to multiply the mass by the value of g, and the correct answer is
C) 9.8 m/s/s
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