A block can slide on a smooth inclined plane of inclination 
kept on the floor of a lift. When the lift is descending with a retardation a, the acceleration of the block relative to the incline is
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
A
Acceleration of block in a stationary lift = 
If lift is descending with acc. then it will be ( g–a ) sin θ θ .
but in the problem acceleration = – a (retardation)
Acceleration of block = 
= 
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