**1. The problem statement, all variables and given/known data**
A block of mass 50g is suspended from the ceiling of an elevator.Find the tension in the string if the elevator goes up with an acceleration of [tex]1.2m/s^2[/tex]

**2. Relevant equations**
[tex]F_{net}=ma_{net}[/tex]

**3. The attempt at a solution**
I have reached here:...but with this i dont get the books answer...The book takes net acceleration to be 0

If F be the pseudo force...then,

[tex]T-F_g-F=ma[/tex]

[tex]a=1.2[/tex]

So solving this i get an answer that differs from the one given in a problem book...that is 55N(the book's ans)

Ive realized that we get 55N if we take [tex]a_{net}=0[/tex].Now how is this possible?