I'm doing self study on physic course I'm reviewing self test and have question on force. A 50-kilogram student stands in an elevator. How much force does she exert on the elevator floor if: The elevator is stationary? For the above would it be true to say that if the elevator is stationary that there is zero force exerted. Is this an example of the upward and downward forces balancing? The elevator accelerates upward at 1 meter per second squared (m/s2)? 50-kilogram. I used (F=ma)to solve (50kg)(9.8m/s^2)=490N Am I using the correct formula?