1.

A rod PQ of length is pivoted tan end P and freely rotated in a horizontal plane at an angular speed \[\omega \] about a vertical axis passing through P. If coefficient of line are x pansion of material of rod is \[\alpha \], find the percentage change in it sangular velocity if temperature of system is increased by \[\Delta \,T\] is

A. \[(\alpha \,\Delta T\times 100)%\]%
B. \[(2\alpha \,\Delta T\times 100)%\]%
C. \[(3\alpha \,\Delta T\times 100)\times 100%\]%
D. \[(4\alpha \,\Delta T\times 100)%\]%
Answer» C. \[(3\alpha \,\Delta T\times 100)\times 100%\]%


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