Question:-
In the figure shown, crank AB is 15 cm long and is rotating at 10 rad/sec C is vertically above A. CA equals 25 cm. C is a swivel trunnion through which BD(40cm.) slides. If ABCD becomes a vertical line during its motion, the angular velocity of the swivel trunnion at that instant

Option (A)
zero
Option (B)
(100/25)rad/s
Option(C)
(100/15)rad/s
Option(D)
(100/10)rad/s
Correct Option:
(A)
Question Solution:

Now (w3/w2) = (I12I23/I13I23)
Now where ABCD become vertical then I12 I23 = 0
\ w3 = 0
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