Question

Difference between Internal force and External force.. ​

Answer 1

Answer:

External forces are forces caused by external agent outside of the system. Internal forces are forces exchanged by the objects in the system. To determine what part should be considered external and internal, mechanical system should be clearly defined.

Answer 2

$\huge\underline\mathfrak\pink{Answer}$

$\large\underline\mathbb\color{plum}{Internal\:force}$

➡Forces that are applied within the system is called internal force.

➡The internal force are caused by exchange of forces within the system.

➡ Example for internal force is movement of tectonic plates and earthquake.

$\large\underline\mathbb\color{plum}{External\:force}$

➡Forces applied outside the system are called external force.

➡External forces are caused by the external agent present outside the system.

➡ Example for external force is a force needed to push an object .