A woman weighing 500 N stands in an elevator that is traveling upward. At a given instant the speed of the elevator as well as the women is 10m/s and both are decreasing at a rate of 2 m/s2 at that instant the elevator is exerts a force on the woman that is

Question

A woman weighing 500 N stands in an elevator that is traveling upward. At a given instant the speed of the elevator  as well as the women  is 10m/s and both are decreasing at a rate of 2 m/s2 at that instant  the elevator is exerts a force  on the woman that is

Elena · Answer

a↓ mg↓ N↑ ma =mg-N N=mg-ma = =W-(W/g) •a= =500 –(500/9.8) •2 =398 N