An object with a mass of 5 kg is on a surface with a kinetic friction coefficient of 4 . How much force is necessary to accelerate the object horizontally at 12 m/s^2?

1 Answer

Force F=64Newtons.

Explanation:

This case is taken as Motion of block on a rough fixed horizontal surface.
In this case, if the block slides or moves with an acceleration under the influence of an external force 'F', the acceleration of the block is
a=(F-f_"k")//m
=> F = ma + f_"k"
Now substituting the values we get
F = (5)(12) + 4
:. F = 64N