The valve is opened and air flows in until the process stops, and we assume the process is adiabatic. Find the final temperature and the air mass in the cylinder.

their crystal patterns have been disrupted by stress

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

option number c is the right answer.