Question

two forces are acting on a body with magnitudes 10N and 8N in the same direction calculate the net force acting on the body? ​

Answer 1

Two forces that act in the same direction produce a resultant force that is larger than either individual force. You can easily calculate the resultant force of two forces that act in a straight line in the same direction by adding their sizes together.

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Answer 2

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if you apply the both the forces in same direction the net resultant forces will lead the body to accelerate ;lets say the body have mass *m*

so it will have and acceleration by the formula

f = ma

net force=10+15 = 25

f = ma

25 = ma

a = 25/m

and if the net forces are on opposite direction then

f = 15 – 10 (since the higher magnitude will produce the acceleration)

so f = 5

5 = ma

a = 5/m

and if the both forces acts on the top part of the mass it will be balanced by the normal reaction force

15 + 10 + mg = N (mg also acting downwards)

if one force is up and one is down so it will be

$\small \underline {\sf{15 \ – \ 10 \ + \ mg \ = \ N }}$