The drawing shows an overhead view of a horizontal bar that is free to rotate about an axis perpendicular to the page. two forces act on the bar, and they have the same magnitude. however, one force is perpendicular to the bar, and the other makes an angle φ with respect to it. the angle can be 90˚, 45˚, or 0˚. rank the values of φ according to the magnitude of the net torque (the sum of the torques) that the two forces produce, largest net torque first.

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

causes

fossil fuels burn

cities become more industrialized

human population grows worldwide

friction

explanation:

they us to move forward and backwards