Question #d4f09
1 Answer
Apr 5, 2016
When the elevator is rising with an acceleration
Explanation:

Elevator is at rest: the scale will read normal weight of the object,
#W = mg# , where#m# is mass and#g# is acceleration due to gravity. 
When the elevator is rising with an acceleration
#a=g# :
Scale will show that weight#W=m(g + g) = 2mg# .  When the elevator is moving down with an acceleration
#a=g# :
Scale will show that weight#W=m(g  g) = 0# .