Oh.needing help again.

A

Explanation:

Point a is the highest. When it comes to potential energy, the higher you are, the more of it you have. Example, when you are at the top of a hill, you have the most potential energy. When you are at the bottom of the hill, you have the least amount of potential energy, and the most kinetic energy.

Hope this helps!!

close lines strong magnet less close weaker

weight of the box is given as

here this is placed on the inclined of angle 42 degree

now this weight will have two components one is along the incline other is perpendicular to it

so here we need to apply a force parallel to incline opposite to its component of weight

so here the component of weight is given as

here we have

so it requires 75 n force to move it upwards