Question

An
object
of
mass
‘m‘
is
kept
on
the
floor
of

a
lift.
What
will
be
the
apparent
weight
of
the
object
when
the
lift
moves
with
a
constant
speed
‘v’
downwards?​

Answer 1

Sorry

Explanation:

not able to understand your question

Answer 2

Given:  

The mass of the object is = m

The lift is moving with a constant velocity in downwards direction = v

To find:  

The apparent weight of the object when it is kept on the floor of the lift.

Solution:  

The apparent weight can be found out by vector addition of the weight of the object and the other forces acting on the object.  

Since the lift moves with a constant velocity, its acceleration = 0  

Apparent weight = mg  

If the lift had an acceleration a in downward direction then,  

Apparent weight must had been = m(g - a)  

Therefore Apparent weight of the object will be equal to its weight = mg.