21. Why is less force needed to keep an object moving than to start the object in motion? Why is less force needed to keep an object moving than to start the object in motion? Sliding friction,
which opposes a moving object, is less than the static friction that acts on an object at rest, so less force
is needed to keep an object moving.

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

get the total number of pieces of fruit and divide it by 4 to get the average. the result is the answer to the problem. 14 total number of fruits and there are 4 members. 14 divided by 4 is equals to 3.5.