A woman pushes a trunk on a railway platform which has a rought surface. she applied a force of 100 Newton over a distance of 10 metre there after is it progress tired and her applied force reduced linearly with the distance to 50 Newton. a total distance by which the trunk has been moved in 10 metre plot the force displacement graph
calculate the total work done by the woman
if the frictional force between the trunk and the rail is 50 newton .what is the work done by the friction