Question
Which would require a greater force: accelerating a $10 g$ mass at $5 ms^{-2}$, or accelerating a $20$ g mass of $2 ms^{-2}?$

Answer

We know force = mass X acceleration
$F_1 = 10 X 5 = 50 dyne.$
$F_2 = 20 X 2 = 40 dyne.$
So first body require more force.

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