2. The length of a day is based on the amount of time that
a. Earth takes to orbit the sun one time
b. Earth takes to rotate once on its axis
c. The moon takes to orbit the Earth one time
d. The moon takes to rotate once on its axis.

the answer is B: earth takes to rotate once on its axis

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