a Porter raised a box of mass M kg on his load and goes from station to bus stand at a distance of 5 if the height of the Potter is N metre and acceleration due to gravity is g m/s square .find the amount of work done (a )against gravity (b) to carry the box from station to bus stand and (c) by the gravity​

a charge 3q is at the origin, and a charge −2q is on the positive x axis at x=a. part a where on the x-axis would you place a third charge so it would experience no net electric force? enter an expression for the exact answer, which will involve a square-root sign. (do not enter an approximate decimal answer.)

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

it is a negative acceleration