Questions
Two cylinders A and I [Fig. (2)] of the same material have same length, their radii being in the ratio 1 : 2
,respectively. The upper end of A is rigidly fixed. The lower end of B is twisted through an angle 0. The angle of twist of the cylinder A is
detailed solution
Correct option is C
Let θ′be the angle of twist for cylinder A.For A, τ=πηr42lθ′……………(1)For B τ=πη(2r)42l×θ−θ′….(2)From eqs. (1) and (2),θ′=16θ−θ′ or 17θ′=16θ∴ θ′=1617θTalk to our academic expert!
Similar Questions
A rectangular block of size 10 cm x 8 cm x 5 cm is kept in three different positions P, Q and R in turn as shown in the figure. In each case, the shaded area is rigidly fixed and a definite force F is applied tangentially to the opposite face to deform the block. The displacement of the upper face will be
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