Answer:
Net force on the block is 32 N.
Acceleration of the object is 6.4 m/s².
Explanation:
Let the acceleration of the object be [tex]a[/tex] m/s².
Given:
Mass of the block is, [tex]m=5\ kg[/tex]
Force of pull is, [tex]F=40\ N[/tex]
Frictional force on the block is, [tex]f=8\ N[/tex]
The free body diagram of the object is shown below.
From the figure, the net force in the forward direction is given as:
[tex]F_{net}=F-f=40-8=32\ N[/tex]
Now, from Newton's second law of motion, net force is equal to the product of mass and acceleration. So,
[tex]F_{net}=ma\\32=5a\\a=\frac{32}{5}=6.4\ m/s^2[/tex]
Therefore, the acceleration of the object in the forward direction is 6.4 m/s².
