Published by:
CGP EDU Academic Team
Published on: September 12, 2026
A block 'B' is just fitting between two plane inclined at an angle 'θ'. The combination of plane is inclined at angle 'α' with horizontal. If coefficient of friction between block and the plane 'µ' is insufficient to stop slipping, then acceleration of block is –
A
g {sin α – μ cos α }
B
C
g {sin α – 2 μ cos α cos θ /2}
D
g {sin α – μ cos α . sin ( θ /2)}
Text Solution
Verified by ExpertsThe correct answer is:
B
Force diagram of block for the view shown
⇒ N = 
∴ Net friction up the plane = 2 μ N
= μ mg 
∴ a = g 
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