A two-axle truck being driven on a flat and straight section of a highway at a speed of 65 mph reaches a curved section of the highway with a grade of 5% and a radius of 1,500ft.
Determine:
(a) The additional force that will be required to maintain the original speed at 65mph
(b) The percentage increase in the total force to maintain the original speed at 65mph
Assume that the truck has a cross-sectional area of 64ft^2 and carrying a load of 18,000lb/axle