Consider a man standing into a lift and according to the given situation, which of the following pair is correct?
A
When lift accelerates upward 
B
When lift accelerates downward 
C
When lift is at rest 
D
When lift falls freely 
Text Solution
Verified by ExpertsThe correct answer is:
D
As we know that, when lift accelerates upward,
Then
When lift accelerates downward, then
When lift is at rest, then 
, hence incorrect.
When lift falls freely, then
a = g
R = m(g-g) = 0
R = 0, 
.
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