A section of fixed smooth circular track of radius R in vertical plane is shown in the figure. A block is released from position A and leaves the track at B. The radius of curvature of its trajectory when it just leaves the track at B is-
Text Solution
Verified by ExpertsThe correct answer is:
C
In figure
OC = R cos 53 0 = 
; OE = R cos 37 0 = 
So CE = 
From A to B,
= mg 
[Energy conservation]
v = 
Let radius of curvature at B is r
g cos 37 0 = 
r = 
= 
= 
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