- #1
Prathamesh
- 20
- 1
Homework Statement
An elevator is ascending with a uniform velocity 2 m/s when a loose bolt gets detached from the ceiling and falls on the floor. If the ceiling is 3 m above the floor , find the time required by the bolt to fall from the ceiling to the floor? (g=10 m/s2)
Homework Equations
The Attempt at a Solution
Relative velocity of bolt with respect to floor before detaching=0 m/s Hence u = 0 m/s
So ,
s=ut + 1/2 at2
=1/2 gt2
Hence , t=0.77 s
but solution says that
put u= -2 m/s
Why this is so??