Question

if you are trying to push a heavy box on a horizontal surface list various forces acting on the box. state the condition under which this box will start siding on the surface. how will the magnitude of applied force required to move the box change it .1) weight of the box is increased. 2) the surface on which the box is played is made more rough<br />

Answer 1

potential energy and gravitation,static forces act on itif static force is more than d opposing force then wid less energy u can push d box.yes wt is increased.if made more rough frictional energy increases and den more energy is required.thus pulling is easier than pushing