The minimum acceleration with which a fireman can slide down a rope, if the breaking strength of the rope is 
of his weight, is
A
B
g
C
D
zero
Text Solution
Verified by ExpertsThe correct answer is:
C
If the fireman slides down with some acceleration, his apparent weight decreases. For critical condition,
rope can bear only 
of his weight. If a is the minimum acceleration then,
Tension in the rope = Breaking stress = m (g - a)
m(g-a) = 
mg 
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