Students need to construct a device that sends a signal using both light and sound. They have a selection of items they can use to build the device. Which two items will be the most useful for making this signaling device?

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

i think it would be 5