To understand how to compute the work done by a constant force acting on a particle that moves in a straight line. in this problem, you will calculate the work done by a constant force. a force is considered constant if f(r) is independent of r. this is the most frequently encountered situation in elementary newtonian mechanics. consider a particle moving in a straight linefrom initial point b to final point a, acted upon by a constantforce f. the force (think of it as a field, having amagnitude and direction at every position r is indicated by a series of identical vectorspointing to the left, parallel to the horizontal axis. the vectorsare all identical only because the force is constant along thepath. the magnitude of the force is f, and the displacement vector from point b to point a is l (of magnitude l, making and angle theta (radians) with the positive x axis). find w_ba, the work that the force f performs on the particle as it moves from point b topoint