Which is the weakest of the four fundamental forces? strong nuclear weak nuclear electromagnetic gravitational

Gravitational force is the weakest of the four fundamental forces .

Explanation:

Strong Nuclear force, Weak Nuclear force, Electromagnetic force and Gravitational force are the four fundamental forces of nature.

>The weak and strong nuclear forces are effective only over a very short range and dominate only at the level of subatomic particles. Gravity and Electromagnetic forces have infinite range.

If we consider interaction strength of gravitational force to be 1 unit then relative strength of other forces are

1. Gravitational force - unit

2. Weak Nuclear force - unit

3. Electromagnetic force - unit

4. Strong Nuclear force -   unit

Thus gravitational force is the weakest force out of four fundamental forces.

the box does not move because you need to use a force greater than 300 n. you are only using 50 n. it needs to at least be 301 n for the box to move because then it is an unbalanced force and it will move the way that the greater force is pushing it. if you use only 300 n it will be a balanced force and will not move because the force you are exerting on the   box is the same as its force.

hope this !

im sorry if i went too in depth, i am going to include a link to a video on khan academy that will explain this.   hope that you like the video and that it explains more in detail to you.

that is the link.