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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. \[(3\alpha \,\Delta T\times 100)\times 100%\]% | |