An object moves in a circle. if the mass is tripled, the speed halved, and the radius unchanged then the centripetal force must change by a factor of: 3/2 3/4 9/4 6 12

3/4

Explanation:

Fc = mv^2/r

Applying the condition will give

Fc= 3mv^2/4r

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.

gas and liquid