A refrigerator weighing 1500N is to be lifted onto a truck bed that is 1.0 m above the ground. When pushed up a slanting ramp 2.0 m in length a force of only 800N is required to move it at constant velocity. Comparing the work involved in lifting the refrigerator straight up to the work in pushing it along the ramp, there is: ____________


a. less work required when the ramp is employed

b. more work required when the ramp is employed

c. an equal amount of work is required in each case.