Question

Bob has a choice of using stairs or a loading ramp to move a 125N box. What is the most likely effort force required if he carries the box up the stairs instead of pushing it up the loading ramp? A) 0 N B) 75 N C) 125 N Eliminate D) 200 N

Answer 1

c

Step-by-step explanation:

Answer 2

By using the stairs instead of a loading ramp in carrying a load, you actually exert an upward force, as opposed to its downward force due to gravity, just by carrying the load. Therefore to maintain the summation of forces in equilibrium, we conclude that a 125 N must be exerted to eliminate the force due to gravity.