The distinction in the genealogy or development of volleyball

The game of volleyball, originally called “mintonette,” was invented in 1895 by William G. Morgan after the invention of basketball only four years before. Morgan, a graduate of the Springfield College of the YMCA, designed the game to be a combination of basketball, baseball, tennis, and handball.

a and b sometimes have a positive value

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