Compare and contrast mechanical energy of a projectile with mechanical energy of a swing

mechanical energy is due to the position and the motion of an object  in a system. A projectile moves in a curve. When the object leaves, it has mostly kinetic energy

Explanation:

On a swing, the ride starts with a push, giving you kinetic energy.

answer: i don't know the answer good luck

explanation:

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