question_answer

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) \[(4\alpha \,\Delta T\times 100)%\]%