(adsbygoogle = window.adsbygoogle || []).push({}); Dynamics Problem...help plz!

hey,

i have a dynamics question here that i'm not quite sure how to solve:

A stone weighs 5.4N. What force must be applied to make it accelerate at 3.0/s^2. (The answer is 7.1N must be applied upwards)

ok, so here's what i've got so far:

-gravity (9.81m/s^2) obviously takes part in this problem.

-i'm thinking that the mass (in kg) must be found. i tried the formula Fg=mg to try and find this, however, i got a huge decimal number giving me doubt.

help would be greatly appreciated!

-jen

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# Homework Help: Dynamics Problem help !

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